Answer any one question from Q1 & Q2

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

7 M

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 M

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

7 M

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

7 M

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 M

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

7 M

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

7 M

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

7 M

Answer any one question from Q5 & Q6

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

7 M

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

7 M

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

7 M

6 (b)
A.G.M. counter wires collects 10

^{8}electrons per discharge when the counting rate is 500 count/minute. What will be the average current in the circuit?
7 M

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 M

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

7 M

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

7 M

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

7 M

Answer any one question from Q9 & Q10

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

7 M

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

7 M

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

7 M

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

7 M

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