B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Optometry
PHYSICAL OPTICS
(2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. Define wave velocity.
2. State the laws of refraction at a spherical surface.
3. What is coherence?
4. Define visibility of fringes.
5. What is a phase grating?
6. State Rayleigh's criterion.
7. Define Degree of polarization.
8. What is a hologram?
9. Define stimulated emission.
10. Give the wavelength range of visible spectrum.
Sub. Code
24
CP-7931
2
WSS
Part B x 5 25)
Answer all questions.
11. Discuss the superposition of two simple harmonic
waves at right angles to each other.
Or
State and explain the laws of reflection at a plane
surface.
12. What is meant by interference of light? State the
conditions for the production of interference fringes.
Or
Give a brief account of thin film antireflection
coatings.
13. Write a note an amplitude grating.
Or
Explain the dispersive power of a grating.
14. Give an account of quarter wave plate.
Or
Write a note on Wollaston Prism.
15. Give a brief account of Infrared spectrum.
Or
Discuss the resolution of binoculars.
CP-7931
3
WSS
Part C x 10 30)
Answer all questions.
16. State and explain Huygeis principle. Explain the
phenomenon of reflection and refraction of a plane
wave on a spherical surface on the basis of wave
nature of light.
Or
Describe Newton's ring experiment to determine the
wavelength of a monochromatic source of light with
necessary theory.
17. Give the theory of zone plate.
Or
Explain the Holography. Describe an experimental
arrangement for recording and reconstruction of
hologram.
18. Discuss briefly the various sources of spectrum.
Or
Write a note on
Veal prism
Interference in Wedge-Shaped films.
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