Personal development planing 2 Essay Example | Topics and Well Written Essays - 2250 words

Personal development planing 2 - Essay Example Hearing her talk about her future sometimes makes me wonder how we could even be considered on the same path. Another friend of mine wants to work in management for a football club. He is obsessed with the sport, a sport that he is horrible at playing but loves watching. He feels that management in a club would be like working a dream job because he could be so close to the sport that he loves. I enjoy a good match every few days, but working in this environment seems to be very limited in scope, yet we are essentially on the same pathway. I see my future in my family business back home in Saudi Arabia. We have a diverse group of businesses that manages governmental contracting, infrastructure development, agricultural development and financial services such as insurance and investment. I am fortunate in that I have many opportunities available to me that most of my classmates do not have available to them. I do not believe that I have it any easier than my classmates, however. Not e veryone has a father that would willingly give them a high position in a construction firm or a financial services industry no matter how qualified. I know that my father would provide a position for me even if I did poorly at school and needed to drop out. That is not the person I wish to be, however. I want to do well within the family business and I have a desire to be an able manager in whatever position comes available. My first choice is to work in the infrastructure development branch of the company. Planning and implementing massive projects such as bridges, airports, desalinization plants and highways sounds exciting to me. This is my destination, but I need to follow the same pathway my classmates with different dreams have to follow. I can see that so far, one of the most important employability skills to development is a sense of integrity and an ethical sensitivity towards business decision making. I know that once I am working as a manager for my family company, I will be working with officials from the government because this is the single largest client for my family’s firm. Being dishonest in my dealings with these officials could do a lot of damage to my family’s company. One of the factors that come into play when bidding for government sponsored work in Saudi Arabia is the reputation for honesty the company has built up over generations. Acting without integrity could harm that reputation for many years to come. Integrity is important in a manager because I have learned that people in positions of leadership are often held to a higher standard than others. This may not be fair, because no one is perfect, but I have learned as I have travelled along this pathway that management is leadership and leadership requires faultless integrity if the support of subordinates is to be gained. A large part of my future career and something that I have enjoyed studying in this pathway is the ability to think critically and to apply problem- solving solutions to real life situations. As a manager in the family business, I will be confronted with a steady stream of problems to solve. What to do when suppliers do not come through with essential parts, how to resolve a conflict between supervisors and employees and operating within a budget while managing fluctuating supply and commodity prices are just a few of the problems I will need to solve. I have enjoyed the problems presented in some of my modules. I especially have been entertained and enlightened

Learning from successful people or failure Essay

Learning from successful people or failure - Essay Example In addition, a person who yearns to learn should either learn from the experiences successful people or learn through failures. From the on-start, I would argue that both methods of learning are important depending on the prevailing situation. Learning from personal failures is paramount in some situations. For example, in school, we are taught various concepts and theories that are important for us to understand and probably apply them in our future career or somewhere in life. In such a scenario making mistakes resulting to examination failures can have a bigger lesson compared to learning from those who have been successful. This mode of learning helps us to experience the reality of what our capacity was at the time of the failure and forge a way forward that will facilitate improvement. In addition, when a student gets a concept wrong, they are curious to know what was expected of them. In contrary, other people’s experience may not teach that. People have very different personalities; the path taken by a successful person to achieve what they have achieved may be quite different from the one that another person will use. This means that to some extent success is personality customized. Though an individual ma y take a path taken by a successful person, chances of failure cannot lack. Learning from the success of others is a very important aspect. Actually, every individual should yearn to learn from others more than learning from their personal failures. This is because personal failures are likely to expose an individual to some bitterness as well as trauma that may be hard to recover. However, some circumstances will require individuals to make mistakes so that they can learn. Firstly, personal failures can expose us to danger. It is better to follow what someone else did and became successful instead of trying a new route unless the route is shorter and convenient. However, this is mainly dominant in research. In most of the areas in life,

MCA selection in church Essay Example for Free

MCA selection in church Essay Once upon a time there was a boy his name was Sonish he was a wonderful bowler and then he heard from his friends that there was a MCA selection in church gate he thought that if he is a good bowler he can attend the selection he ran and told his mom that there mca selection his mom told okay but where did you saw that Sonish told I heard from my friends mom told okay then Sonish told yes he ran and stand on the line and but he was worried because there alder people than him but still he told himself to not give up then he went inside then his turn came and he bowled it was a yorker but the batsman easily defensed it but still he had confidence again the same bowl and he was bowled the judges were impressed with him the next two bowls were short length then the next two bowls were full length. Then the sir told you bowled well met Bhuvneshwar Kumar from tomorrow he will be your coach Sonish told ok sir but I am selected if I told you come tomorrow means you are selected. The next day I came kumar sir told that first run and then we will do net practice ok I was the first won to finish and then I went to sir and told I finished then sir told quick we have to do net practice I bowled the six bowls very well after 10 days of practice sir told Sonish tomorrow we have to go to Kandivali you have been selected for a tournament fast Sonish was very happy the next day he went with his marvelous bowling his team went to the final and the final was interesting we were bowling first Sonish took three wickets and the target was 35 in 6overs the score was 24-6 I came and hit two sixes and finished the game and remembered in Maharashtra cricket association then after a year Sonish again came back and everyone were saluting him because he won many prizes in three tri-series; Ranji Trophy and first class cricket. Then he came to kumar sir and told sir I did my job and came now what is left for me to do sir told now you have to get the under-19 world cup Sonish told ok sir I will try my best after 10 days the first u-19 match was there it was India vs. Australia India won the toss and choose to bowl first then Sonish was from the stump the first over went excellent for the Indian team then following the first o over till the 50th over the target for the Indians was 234 in 50 overs it was easy task if we play the game seriously we won the game very easily like this only we won the coming 8 games then India came in the semi- finals are match was vs. south Africa they were an easy team if we play very serious cricket well they were batting first they set a target of 280 we had to get a good start and then I just didn’t see but suddenly are score came to 275 then a big six and we won it was a hard score but we still got it in 45.5 overs this was the best match ever for India [final lost by the Indians] then I was the presentation ceremony in that I got the best bowler award through the tournament. The best sport cricket the best thing in the world

Radiography in Ureterocele

Radiography in Ureterocele Ashley Norman One day wanting to be a mother, I can imagine that all you pray for is there to be no complications throughout the pregnancy. Walking into a doctor’s appointment for a routine ultrasound to check the baby and having the doctor say, â€Å"ma’am your baby has hydronephrosis and an ureterocele,† would be a very scary moment of the unknown. Because ureteroceles only occurs in about one of every 1,000 births, there would be many questions such as: what is an ureterocele, what tests will have to be done and what treatments will need to be taken (UCSF). As this became a reality to a friend of mine, all the questions must be answered. The field of radiography has different modalities and studies that use medical imaging that can diagnose and watch the condition of Ureteroceles. At nineteen weeks pregnant, Emily was told that Trent had severe hydronephrosis in his right kidney found on the ultrasound (Davis, 2014). One might be wondering, what is hydronephrosis? It is the distention of renal pelvis and calyces with urine (Eugene D. Frank, 2012). Another ultrasound done at twenty-four weeks showed the ureterocele. An ureterocele, a congenital condition, is a ballooning of the lower end of the ureter inside the bladder (Boston) (Philadelphia). This may cause part or the entire stream of urine from flowing freely into the bladder. It may also cause the backward flow of urine into the child’s kidney causing vesicoureteral reflux or VUR (Philadelphia). Ureteroceles are ten times more common in girls than boys, occur most often in Caucasians and vary in size (Boston). Trent is Caucasian, though he is a more rare case being a boy. Like Trent’s, the ureterocele is continued to be seen on the ultrasounds throughout the pregnancy. As determined, Ureteroceles are most commonly found from an ultrasound before the child is born or within a few days after birth. They are also used often to manage babies with hydronephrosis (Philadelphia) (UCSF). This modality of radiology called ultrasound or sonography is a noninvasive procedure that uses high-frequency sound waves to produce echoes within the body. The transducer sends and receives sound wave signals as it is moved over the surface of the body producing an image in real-time on a computer monitor. Learning the due date, revealing the presence of more than one child and the sex of the child or children are all familiar things that ultrasound determines. Conditions affecting the organs and tissues of the body such as the heart, gallbladder, liver, kidneys, and bladder may be determined by the use of sonography (WebMD Ultrasound). A renal bladder ultrasound is often used because its spotlight is specifically on the kidneys and bladder (Boston). The severity of the babies’ hydronephrosis and the presence of an ureterocele is valuable information shown on the RUS for the doctor. At about 16 or a18 months old, Trent had an RUS before he had surgery. Post surgery, Trent had another RUS to check the status (Davis, 2014). Again, ultrasound or sonography is the most common modality used to find Ureteroceles. Another study done to identify or evaluate the ureterocele is a voiding cysto-urethrogram or VCUG. The child will have a catheter placed through the urethra into the bladder (Philadelphia). A contrast material will be introduced against the normal flow or retrograde (Eugene D. Frank, 2012). As the contrast is filling the bladder fluoroscopy will be used to take pictures. Fluoroscopy is a type of medical imaging that is real-time showing continuous x-ray images on a monitor (FDA). Pictures will continue to be taken until the bladder is full and then again as the child voids or urinates. The VCUG study is done to confirm if VUR, reflux or backwash of urine into the ureter, is occurring because this would affect how the ureterocele is treated (UCSF). A VCUG was performed on Trent pre and post surgery (Davis, 2014). This procedure may be done more than once to continue to monitor the size and severity of the ureterocele along with any harm that may develop to the child’s kidneys. Nuclear medicine is another modality of radiography that â€Å"uses a special camera, gamma, to take pictures of tissues and organs in the body after a radioactive tracer, either radionuclide or radioisotope, is put in the vein in the arm and is absorbed by the tissues and organs. The radioactive tracer shows the activity and function of the tissues or organs† (WebMD Nuclear Medicine). A nuclear renal scan is done using nuclear medicine with one of two types of substances: DTPA or Mag3. Both are radiopharmaceuticals that may be used but very young children or someone with poor kidney functions will have better images if Mag3 is used (Nandurkar, 2009). The difference in function between the two kidneys may be measured along with the degree of blockage in the urinary system (Boston). Before surgery, a Mag3 scan was completed on Trent giving information on why the surgery was being performed and the severity (Davis, 2014). Using this modality of radiography, Nuclear Medicine, and its renal scanning test, ureteroceles may be identified and monitored. Finally, the modality of Magnetic Resonance Imaging or MRI may be used for ureteroceles. â€Å"MRI is a noninvasive diagnostic modality that does not use ionizing radiation.† The images on the computer monitor are provided by a powerful magnetic field and radio frequency pulses that are combined to produce a radio signal in the body that can be detected and processed electronically (Ehrlich, 2009). Although Trent has not had an MRI yet, when he does there will be very detailed pictures of the kidneys, ureters and bladder that can be taken and stored for diagnosis, monitoring and comparing of ureteroceles (Davis, 2014). The treatment of an ureterocele is dependent upon many factors such as the size, degree of obstruction, function of the kidney, presence of VUR and affects of the bladder. Although not all are helped by endoscopic surgery, it is one treatment that may be used to fix the ureterocele (Boston). Trent’s doctors at the Children’s Hospital in New Orleans chose this treatment. The endoscopic surgery is a minor procedure, no incisions made, which is usually done in an outpatient setting. A cystoscope, a lighted tube, is inserted into the urethral opening to see inside the bladder showing areas that may not show up well on X-ray images (Philadelphia). When the ureterocele is reached it will be punctured or popped, therefore relieving any obstruction. After the puncture, a VCUG is often performed to look for any reflux. Renal ultrasounds are also performed following the puncture to â€Å"ensure that any dilation has improved and that the ureterocele has gone away (UCSF).† Unfortunately, Trent was a case that the endoscopic surgery did not help (Davis, 2014). His mom and dad now have a waiting game to see if any further actions must be taken to try and solve his ureterocele. Through the field of radiology, different modalities and studies, Trent can be monitored and enjoy being a little boy, doing what little boys enjoy while his mom and dad trust the field of radiography and the advances that continue to keep their baby safe. Works Cited Boston, C. H. (n.d.). Ureterocele. Retrieved February 16, 2014, from Boston Childrens Hospital: http://www.childrenshospital.org/health-topics/conditions/ureterocele Davis, E. (2014, February). (A. Norman, Interviewer) Ehrlich, R. A. (2009). Patient Care in Radiography. Missouri. Eugene D. Frank, B. W. (2012). Merrills Atlas of Radiographic Positioning and Procedures. Missouri: Jeanne Olson. FDA. (n.d.). Medical X-Ray Imaging Fluoroscopy. Retrieved March 4, 2014, from FDA Gov: http://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsandProcedures/MedicalImaging/MedicalX-Rays/ucm115354.htm Nandurkar, M. M. (2009, May 01). Nuclear Medicine Renal Scan. Retrieved March 4, 2014, from Inside Radiology: http://www.insideradiology.com.au/pages/view.php?T_id=43#.UyHAJVBdW8A Philadelphia, T. C. (n.d.). Ureterocele. Retrieved February 16, 2014, from The Childrens Hospital of Philadelphia: http://www.chop.edu/healthinfo/ureterocele.html UCSF, D. o. (n.d.). Ureteroceles. Retrieved February 16, 2014, from University of California, Department of Urology: https://urology.ucsf.edu/patient-care/children/urinary-tract-obstruction/ureteroceles WebMD Nuclear Medicine, T. (n.d.). Nuclear Mediciine Scan. Retrieved March 4, 2014, from WebMD: http://www.webmd.com/a-to-z-guides/nuclear-medicine-scan-topic-overview WebMD Ultrasound, T. (n.d.). What is an Ultrasound? Retrieved February 16, 2014, from WebMD: http://www.webmd.com/a-to-z-guides/what-is-an-ultrasound

Stopping By Woods On A Snowy Evening :: essays research papers

Interpretation of Stopping by Woods on a Snowy Evening First Response My first response to this poem was that it seemed simple. To me, the speaker is simply stopping by the woods on snowy evening and enjoying the peaceful scenery. His senses are heightened and he is taking in the sounds of the falling snow and the winter wind. However, he cannot ignore urgency that calls him to keep going. He wants to stay in the woods, but realizes how many miles he must travel before he can sleep for the night. As I thought about the simplicity of this poem, I knew that there had to be more to a Robert Frost poem. I began to compare this poem with the way that Robert Frost usually writes. He is known for writing about death and darkness. I decided to reexamine the poem and look for evidence of death. It actually became quite apparent. He describes the woods as lovely, dark, and deep. Death, to some, is lovely. It is definitely dark, and the grave is deep. When he is in the woods he is far away from the city. The city can be considered a symbol of life. There is alway s a lot going on in a city. He knows that it is not his time to die, and he cannot stay in the peaceful woods. His horse reminds him that it is not his time to die by making noise and disturbing the tranquility of his moment or death. At the end of the poem the line referring to miles before he can sleep lets the reader know that the speaker has a lot more life left before his death. Speaker and Tone I think the speaker in this poem is a man for two reasons. First, I picture this poem to take place many years ago. He refers to a village and that his transportation is a horse and carriage. Also, I think it is a man because during this time period a woman would not be alone in the woods. The overall tone of this poem is peaceful. The speaker sets the mood of serenity and total enjoyment with his surroundings. Structure and Form The poem consists of four almost identically structured stanzas. Each line is iambic. Within each stanza the first, second, and fourth lines rhyme. The third line does not, but it sets up the rhyme for the next.

Television Censorship Essay -- essays research papers

Television Censorship WHAT IS CENSORSHIP? "Censorship is the supervision and control of the information and ideas that are circulated among the people within a society. In modern times, censorship refers to the examination of books, periodicals, plays, films, television and radio programs, news reports, and other communication media for the purpose of altering or suppressing parts thought to be objectionable or offensive. The objectionable material may be considered immoral or obscene, heretical or blasphemous, seditious or treasonable, or injurious to the national security. Thus, the rationale for censorship is that it is necessary for the protection of three basic social institutions: the family, the church, and the state. Censorship and the ideology supporting it go back to ancient times. Every society has had customs, taboos, or laws by which speech, play, dress, religious observance, and sexual expression were regulated(Microsoft Encarta 95)." CENSORSHIP OF OBSCENITY "The beginning of a new legal approach may be traced to the action of the federal courts in the 1930s, when they held that Irish author James Joyce's Ulysses was not obscene and could be freely passed through customs. The courts ruled that the use of "dirty words" in "a sincere and honest book" did not make the book "dirty." Since the 1950s many obscenity cases involving books, magazines, and film have been brought before the Supreme Court. In the cases during the 1970s the court ruled that laws against obscenity must be limited " to works which, taken as a whole, appeal to the prurient interest in sex; which portray sexual conduct in a patently offensive way; and which, taken as a whole, do not have serious literary, artistic, political, or scientific value." The Court has further held that obscenity should be determined by applying "contemporary community standards" rather than national standards (Microsoft Encarta 95)." WHO DOES TELEVISION CENSORSHIP EFFECT? CENSORSHIP AFFECTS MINORS AND ADULTS Does censorship affect both minors and adults? One incident in Ohio led a mother of a 5 year old boy to believe so. The boy's mother attributed his actions to the influence of the popular MTV cartoon show Beavis and Butthead. In response to watching this cartoon the boy set his house on fir... ...censorship of television. The government of the United States of America has been getting very involved in what they think is appropriate to be on television. I want to know why they get to decide what I want to watch. I feel that it should be a person's choice. They say they are concerned with what children are viewing, or that some things such as nudity and swear words offend people. Parents should monitor what their children watch. If a parent does not want their child to see something in particular, then it is the parent's responsibility to see that they do not, not the government's (Microsoft Internet Explorer)." What do you think? Should our government continue to enforce television and film censorship as it has been? Or should all forms of censorship be abolished completely? THE PURPOSE "It is the purpose of this Act to increase competition in all telecommunications markets and provide for an orderly transition from regulated markets to competitive and deregulated telecommunications markets consistent with the public interest, convenience, and necessity (Telecommunications Bill of 1995, Internet)."

Customer Review Essay

1. Describe the Michelson Morley experiment and discuss the importance of its negative result. 2. Calculate the fringe shift in Michelson-Morley experiment. Given that: [pic], [pic], [pic], and [pic]. 3. State the fundamental postulates of Einstein special theory of relativity and deduce from them the Lorentz Transformation Equations . 4. Explain relativistic length contraction and time dilation in special theory of relativity? What are proper length and proper time interval? 5. A rod has length 100 cm. When the rod is in a satellite moving with velocity 0.9 c relative to the laboratory, what is the length of the rod as measured by an observer (i) in the satellite, and (ii) in the laboratory?. 6. A clock keeps correct time. With what speed should it be moved relative to an observer so that it may appear to lose 4 minutes in 24 hours? 7. In the laboratory the ‘life time’ of a particle moving with speed 2.8x108m/s, is found to be 2.5Ãâ€"10-7 sec. Calculate the proper life time of the particle. 8. Derive relativistic law of addition of velocities and prove that the velocity of light is the same in all inertial frame irrespective of their relative speed. 9. Two particles come towards each other with speed 0.9c with respect to laboratory. Calculate their relative speeds. 10. Rockets A and B are observed from the earth to be traveling with velocities 0.8c and 0.7 c along the same line in the same direction. What is the velocity of B as seen by an observer on A? 11. Show that the relativistic invariance laws of conservation of momentum leads to the concept of variation of mass with speed and mass energy equivalence. 12. A proton of rest mass [pic] is moving with a velocity of 0.9c. Calculate its mass and momentum. TUTORIAL SHEET: 1 (Module1: Special Theory of Relativity) . 13. The speed of an electron is doubled from 0.2 c to 0.4 c. By what ratio does its momentum increase? 14. A particle has kinetic energy 20 times its rest energy. Find the speed of the particle in terms of ‘c’. 15. Dynamite liberates about 5.4Ãâ€"106 J/Kg when it explodes. What fraction of its total energy is in this amount? 16. A stationary body explodes into two fragments each of mass 1.0 Kg that move apart at speeds of 0.6 c relative to the original body. Find the mass of the original body. 17. At what speed does the kinetic energy of a particle equals its rest energy? 18. What should be the speed of an electron so that its mass becomes equal to the mass of proton? Given: mass of electron=9.1Ãâ€"10-31Kg and mass of Proton =1.67Ãâ€"10-27Kg. 19. An electron is moving with a speed 0.9c. Calculate (i) its total energy and (ii) the ratio of Newtonian kinetic energy to relativistic energy. Given: [pic] and[pic]. 20. (i) Derive a relativistic expression for kinetic energy of a particle in terms of momentum. (ii) Show that the momentum of a particle of rest mass [pic] and kinetic energy [pic], is given by[pic]. 21. Find the momentum (in MeV/c) of an electron whose speed is 0.60 c. Verify that v/c = pc/E TUTORIAL SHEET: 2(a) (Module2: Wave Mechanics) 1. What do you understand by the wave nature of matter? Obtain an expression of de Broglie wavelength for matter waves. 2. Calculate the de-Broglie wavelength of an electron and a photon each of energy 2eV. 3. Calculate the de-Broglie wavelength associated with a proton moving with a velocity equal to 1/20 of the velocity of light. 4. Show that the wavelength of a 150 g rubber ball moving with a velocity of [pic] is short enough to be determined. 5. Energy of a particle at absolute temperature T is of the order of [pic]. Calculate the wavelength of thermal neutrons at[pic]. Given: [pic], [pic] and [pic]. 6. Can a photon and an electron of the same momentum have the same wavelengths? Calculate their wavelengths if the two have the same energy. 7. Two particles A and B are in motion. If the wavelength associated with particle A is [pic], calculate the wavelength of the particle B if its momentum is half that of A. 8. Show that when electrons are accelerated through a potential difference V, their wavelength taking relativistic correction into account is [pic] , where e and [pic] are charge and rest mass of electrons, respectively. 9. A particle of rest mass m0 has a kinetic energy K. Show that its de Broglie wavelength is given by [pic] TUTORIAL SHEET: 2(a) (Module2: Wave Mechanics) 16. Explain Heisenberg uncertainty principle. Describe gamma ray microscope experiment to establish Heisenberg uncertainty principle. 17. How does the Heisenberg uncertainty principle hint about the absence of electron in an atomic nucleus? 18. Calculate the uncertainty in momentum of an electron confined in a one-dimensional box of length[pic]. Given:[pic] . TUTORIAL SHEET: 2(b) (Module 2: Wave Mechanics) 1. Differentiate between ÃŽ ¨ and IÃŽ ¨I2. Discuss Born postulate regarding the probabilistic interpretation of a wave function. 2. Write down the set of conditions which a solution of Schrà ¶dinger wave equation satisfies to be called a wave function. 3. What do you mean by normalization and orthogonality of a wave function? 4. Show that if potential energy V(x) is changed everywhere by a constant, the time independent wave equation is unchanged. What is the effect on the energy Eigen values? 5. Show that[pic], where [pic]the reduced mass and B is the binding energy of the particles. 6. Show that [pic]is an acceptable eigen function, where k is some finite constant. Also normalize it over the region[pic]. 7. Explain the meaning of expectation value of x. write down the Eigen operators for position, linear momentum and total energy. 8. Show that time independent Schrà ¶dinger equation is an example of Eigen value equation. 9. Derive the time independent Schrà ¶dinger equation from time dependent equation for free particle. 10. For a free particle, show that Schrà ¶dinger wave equation leads to the de-Broglie relation [pic]. 11. Derive expression for probability current density or particle flux. Also , show that the probability density Ï  and probability current density [pic] satisfy the continuity equation[pic] TUTORIAL SHEET: 2(b) (Module 2: Wave Mechanics) 12. Write Schrà ¶dinger equation for a particle in a box and determine expression for energy Eigen value and Eigen function. Does this predict that the particle can possess zero energy? 13. Find the expectation values of the position and that of momentum of a particle trapped in a one dimensional rigid box of length L. 14. The potential function of a particle moving along positive x-axis is given by V(x) = 0for x < 0 V(x) = V0for x [pic] 0 Calculate the reflectance R and transmittance T at the potential discontinuity and show that R+T=1. 15. An electron is bounded by a potential which closely approaches an infinite square well of width[pic]. Calculate the lowest three permissible quantum energies the electron can have. 16. A particle is moving in one dimensional box and its wave function is given by [pic]. Find the expression for the normalized wave function. 17. Calculate the value of lowest energy of an electron moving in a one-dimensional force free region of length 4[pic]. 18. A particle of mass [pic]kg is moving with a speed of [pic] in a box of length[pic]. Assume this to be one dimensional square well problem, calculate the value of n. 19. A beam of electron impinges on an infinitely wide energy barrier of height 0.03 eV, find the fraction of electrons reflected at the barrier if the energy of the electrn is (a) 0.025 eV (b) 0.030 eV (c) 0.040 eV TUTORIAL SHEET: 3(a) (Module 3: Atomic Physics) 1. What are the essential features of Vector Atom model? Also discuss the quantum numbers associated with this model. 2. For an electron orbit with quantum number l = 2, state the possible values of the components of total angular momentum along a specified direction. 3. Differentiate between L-S coupling (Russel-Saunders Coupling) and j-j coupling schemes. 4. Find the possible value of J under L-S and j-j coupling scheme if the quantum number of the two electrons in a two valence electron atom are n1 = 5 l1 = 1 s1 =1/2 n2 = 6 l2 = 3 s2 = 1/2 5. Find the spectral terms for 3s 2d and 4p 4d configuration. 6. Applying the selection rule, show which of the following transitions are allowed and not allowed D5/2 [pic] P3/2; D3/2 [pic] P3/2 ; D3/2 [pic] P1/2 ; P3/2 [pic] S1/2 ; P1/2 [pic] S1/2 7. What is Paschen back effect? Show that in a strong magnetic field, anomalous Zeeman pattern changes to normal Zeeman pattern. 8. Why does in normal Zeeman effect a singlet line always splitted into three components only. 9. Illustrate Zeeman Effect with the example of Sodium D1 and D2 lines. 10. An element under spectroscopic examination is placed in a magnetic field of flux density 0.3 Web/m2. Calculate the Zeeman shift of a spectral line of wavelength 450 nm. 11. The Zeeman components of a 500 nm spectral line are 0.0116 nm apart when the magnetic field is 1.0 T. Find the ratio (e/m) for the electron. 12. Calculate wavelength separation between the two component lines which are observed in Normal Zeeman effect, where – the magnetic field used is 0.4 weber/m2 , the specific charge- 1.76x1011Coulomb/kg and ÃŽ »=6000[pic]. TUTORIAL SHEET: 3(b) (Module 3: Atomic Physics) 1. Distinguish between spontaneous and stimulated emission. Derive the relation between the transition probabilities of spontaneous and stimulated emission. 2. What are the characteristics of laser beams? Describe its important applications. 3. Calculate the number of photons emitted per second by 5 mW laser assuming that it emits light of wavelength 632.8 nm. 4. Explain (a) Atomic excitations (b) Transition process (c) Meta stable state and (d) Optical pumping. 5. Find the intensity of laser beam of 15 mW power and having a diameter of 1.25 mm. Assume the intensity to be uniform across the beam. 6. Calculate the energy difference in eV between the energy levels of Ne-atoms of a He-Ne laser, the transition between which results in the emission of a light of wavelength 632.8nm. 7. What is population inversion? How it is achieved in Ruby Laser? Describe the construction of Ruby Laser. 8. Explain the operation of a gas Laser with essential components. How stimulated emission takes place with exchange of energy between Helium and Neon atom? 9. What is the difference between the working principle of three level and four level lasers? Give an example of each type. 10. How a four level Laser is superior to a three level Laser? TUTORIAL SHEET: 3(c) (Module 3: Atomic Physics) 1. Distinguish between continuous X-radiation and characteristic X-radiation spectra of the element. 2. An X ray tube operated at 100 kV emits a continuous X ray spectrum with short wavelength limit ÃŽ »min = 0.125[pic]. Calculate the Planck’s constant. 3. State Bragg’s Law. Describe how Bragg’s Law can be used in determination of crystal structure? 4. Why the diffraction effect in crystal is not observed for visible light. 5. Electrons are accelerated by 344 volts and are reflected from a crystal. The first reflection maxima occurs when glancing angle is 300 . Determine the spacing of the crystal. (h = 6.62 x 10-34 Js , e = 1.6 x 10-19 C and m = 9.1 x10-31 Kg) 6. In Bragg’s reflection of X-rays, a reflection was found at 300 glancing angle with lattice planes of spacing 0.187nm. If this is a second order reflection. Calculate the wavelength of X-rays. 7. Explain the origin of characteristic X-radiation spectra of the element. How Mosley’s law can explained on the basis of Bohr’s model. 8. What is the importance of Mosley’s law? Give the important differences between X-ray spectra and optical spectra of an element? 9. Deduce the wavelength of [pic] line for an atom of Z = 92 by using Mosley’s Law. (R= 1.1 x 105 cm-1). 10. If the KÃŽ ± radiation of Mo (Z= 42) has a wavelength of 0.71[pic], determine the wavelength of the corresponding radiation of Cu (Z= 29). 11. The wavelength of LÃŽ ± X ray lines of Silver and Platinum are 4.154 [pic]and 1.321[pic], respectively. An unknown substance emits of LÃŽ ± X rays of wavelength 0.966[pic]. The atomic numbers of Silver and Platinum are 47 and 78 respectively. Determine the atomic number of the unknown substance. TUTORIAL SHEET: 4(a) (Module 4: Solid State Physics) 1. Discuss the basic assumptions of Sommerfeld’s theory for free electron gas model of metals? 2. Define the Fermi energy of the electron. Obtain the expression for energy of a three dimensional electron gas in a metal. 3. Prove that at absolute zero, the energy states below Fermi level are filled with electrons while above this level, the energy states are empty. 4. Show that the average energy of an electron in an electron gas at absolute zero temperature is 3/5[pic], where[pic], is Fermi energy at absolute zero. 5. Prove that Fermi level lies half way down between the conduction and valence band in intrinsic semiconductor. 6. Find the Fermi energy of electrons in copper on the assumption that each copper atom contributes one free electron to the electron gas. The density of copper is 8.94(103 kg/m3 and its atomic mass is 63.5 u. 7. Calculate the Fermi energy at 0 K for the electrons in a metal having electron density 8.4x1028m-3. 8. On the basis of Kronig – Penney model, show that the energy spectrum of electron in a linear crystalline lattice consists of alternate regions of allowed energy and forbidden energy. 9. Discuss the differences among the band structures of metals, insulators and semiconductors. How does the band structure model enable you to better understand the electrical properties of these materials? 10. Explain how the energy bands of metals, semiconductors and insulators account for the following general optical properties: (a) Metals are opaque to visible light, (b) Semiconductors are opaque to visible light but transparent to infrared, (c) Insulator such as diamond is transparent to visible light. 11. Discuss the position of Fermi energy and conduction mechanism in N and P-type extrinsic semiconductors. TUTORIAL SHEET: 4(b) (Module 4: Solid State Physics) 1. What do you mean by superconductivity? Give the elementary properties of superconductors. 2. Discuss the effect of magnetic field on a superconductor. How a superconductor is different from a normal conductor. 3. Discuss the effect of the magnetic field on the superconducting state of type I and type II superconductors. 4. What are the elements of the BCS theory? Explain the formation of Cooper pairs. 5. Explain the phenomena of Meissner effect and zero resistivity with the help of BCS theory. 6. The metals like gold, silver, copper etc. do not show the superconducting properties, why? 7. Describe the V-I characteristics of p-n junction diode. What do you understand by drift and diffusion current in the case of a semiconductor? 8. Explain the working and characteristics of a photodiode by using I-V curve. 9. Describe the phenomena of carrier generation and recombination in a semiconductor. 10. Define the phenomenon of photoconduction in a semiconductor. Deduce the relation between the wavelength of photon required for intrinsic excitation and forbidden energy gap of semiconductor. 11. Establish the relation between load current and load voltage of a solar cell. Describe the applications of solar cell in brief.