STUPIDSID
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 108 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 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 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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