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 the any one question from Q1 & Q2
1 State and explain Heisenberg uncertainty principle. Illusrate it with the help of an experiment.
14 M

2 What is Compton Effect? Explaining the Compton shift expression, discuss the various possibilities of X-ray scattering.
14 M

Answer the any one question from Q3 & Q4
3 Describe Michelson's interferometer and how will you measure small difference in wavelengths of two waves with Michelson's interferometer. Calculate the distance between the two, successive positions of a movable mirror of Michelson's interferometer giving best fringes in the case of sodium light having lines of wavelength 5890 Å and 5896 Å.
14 M

4 Explain Rayleigh criterion of resolving power of optical instrument. Derive the expression for resolving power of diffraction grating. Calculate the number of lines per cm on a grating which will resolve the sodium light of wavelength 5890 Å in the second and first order.
14 M

Answer the any one question from Q5 & Q6
5 Describe the construction and working of a Betatron. Explain Betatron condition.
14 M

6 Discuss the construction and working of a Bainbridge mass spectrograph.
14 M

Answer the any one question from Q7 & Q8
7 What is Hall Effect? Show that Hall coefficient is independent of the applied magnetic field and is inversely proportional to current density and electronic charge.
14 M

8 What is Zener Diode? Draw the equivalent circuit of an ideal and actual Zener diode. What are its uses?
14 M

Answer the any one question from Q9 & Q10
9 Describe construction and working of Ruby laser with the help of a necessary diagram.
14 M

10 What are optical fibers? Explain how glass fiber guides light from one end to the other. Define acceptance angle of an optical fiber.
A glass clad fiber is made with core glass of refractive index 1⋅5 and the cladding is dopped to give fractional index difference of 0.0005. Find the acceptance angle of such fiber.
14 M

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