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Question Paper: Engineering Physics Question Paper - December 2013 - First Year Engineering (Set B) (Semester 1) - Rajiv Gandhi Proudyogiki Vishwavidyalaya (RGPV)

Engineering Physics - December 2013

RGPV First Year Engineering (Set B) (Semester 1)

Total marks: --
Total time: --
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary

Answer any one question from Q1 & Q2

1 (a) State and explain Heisenberg's uncertainty principle. Discuss an experimental illustration of it. 7 marks

1 (b) An X-ray photon of wavelength 0.4A° is scattered through an angle 45° by a loosely bound electron. Find the wavelength of the scattered photon. 7 marks

2 (a) Derive Schrodinger time-independent equation for matter wave. 7 marks

2 (b) Obtain expression of energy level for particle tapped in one dimensional square with infinitely deep potential well. 7 marks

Answer any one question from Q3 and Q4

3 (a) Describe the construction and working of Michelson's interferometer. Explain the principle of formation of circular fringes. 7 marks

3 (b) Discuss working of Nicol prism as polarizer and analyser. 7 marks

4 (a) Obtain an expression for maxima and minima due to diffraction of light by single slit. 7 marks

4 (b) A plane transmission diffraction grating has 45000 lines. Determine its resolving power in the second order for wavelength of 5000 A°. 7 marks

Answer any one question from Q5 & Q6

5 (a) Explain the postulates of the liquid drop nuclear model. 7 marks

5 (b) Discuss the working of Betatron and obtain the relation for betatron condition. 7 marks

6 (a) Describe the construction and working of Bainbridge mass spectrograph. 7 marks

6 (b) A.G.M. counter wires collects 108 electrons per discharge when the counting rate is 500 count/minute. What will be the average current in the circuit? 7 marks

Answer any one question from Q7 & Q8

7 (a) Describe the behaviour of an electron in periodic potential using the final expression of Kronig-Penney Model. 7 marks

7 (b) What is super conductivity? Discuss Meissner effect. 7 marks

8 (a) Discuss the basic operation and characteristics of a solar cell with necessary diagram. 7 marks

8 (b) Explain the dielectric loss. Obtain an expression for loss tangent of it. 7 marks

Answer any one question from Q9 & Q10

9 (a) Discuss construction and working of He-Ne laser with energy level diagram. 7 marks

9 (b) An SI optical fiber of diameter 55 μm has a numerical aperture of 0.23. If the wavelength of input light is 0.82 μm, determine the number of modes of the cable. 7 marks

10 (a) Obtain the relation between the transition probabilities of Einstein's A and B coefficient. 7 marks

10 (b) Write a short note on different loss mechanism in an optical fiber. 7 marks

written 10 days ago by gravatar for PonnuPriya PonnuPriya0
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