PHYSICS-III
Wave Optics
Unit-I
Essays
1)
Explain spherical and chromatic
aberration of a lens?
2)
What is an achromatic doublet or
achromatism when two convex lenses are in contact?
3)
What is an achromatic doublet or
achromatism when two convex lenses are seperated by a distance.
4)
What is spherical aberration and how it
can be reduced?
Shorts
1)
What is astigmatism how
can it be corrected?
2)
What is Coma how can it
be corrected
3)
What is distortion?
4)
What is chromatic
aberration and explain lateral and longitudinal chromatic aberration?
Unit-II
Essays
1)
Explain Newton rings experiment derive an equation for
the wavelength of a monochromatic light.
2)
Describe the michelson interferometer and explain how it
is used to determine the wavelength of light.
3)
Explain about fresnel biprism.
4)
Explain cosine law interference due to refracted light
and reflected light.
5)
Explain about wedge shaped film.
Shorts
1)
What is the principle
of superposition?
2)
What is coherence and
coherent sources?
3)
Explain the formation
of colours in thin films?
4)
What are the conditions
for interference of light?
Unit-III
Essays
1)
Explain about fraunhofer diffraction at single slit?
2)
Explain abut fraunhofer diffraction at double slit?
3)
Explain about fraunhofer diffraction at n slits?
4)
Explain about zone plate.
5)
Determination of wavelength by using diffraction grating
by using normal incidence method and oblique method.
6)
Explain Fresnel half period zones.
Shorts
1)
Explain resolving power
of grating
2)
differences between
fresnel and fraunhofer diffraction
3)
Difference between
interference and diffraction.
4)
Compare zone plate with
convex lens.
Unit-IV
Essays
1)
Explain the construction and working of nicol prism.
2)
Explain the construction and working of laurent's half shade polarimeter.
3) What is optical
activity explain how is it determine.
Shorts
1)
Explain Brewster’s law.
2)
Explain law of malus.
3)
Explain quarter wave
plate and half wave plate.
Unit-V
Essays
1)
Describe the construction and working of ruby laser.
2)
Describe the construction and working of he-ne laser.
3)
Define Einstein coefficients obtain relation between them.
4)
What are different types of optical fibres? Explain
different nodes of propagation.
Shorts
1)
Explain about spontaneous
and stimulated emission.
2)
Explain about
population inversion.
3)
Explain about
holography.
4)
Explain the principle
of optical fibre.
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