ADIKAVI NANNAYA UNIVERSITY PHYSICS III SEMESTER MODEL QUESTION PAPER WAVE OPTICS ( For Maths combination)-2017
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ADIKAVI NANNAYA
UNIVERSITY::RAJAHMUNDRY
CBCS / Semester System
(From 2015-16 Admitted Batch)
PHYSICS
III SEMESTER
MODEL QUESTION PAPER
WAVE OPTICS
( For Maths combination)
Time:3 Hours
Max.marks:75
SECTION-A
5X5=25M
I. Answer any FIVE questions
1.Explain astigmatism.
2.Explain the formation of
colours in thin film.
3.Compare fresnel and fraunhofer
classes of diffraction.
4.State and prove law of malus.
5.Write any five applications of
Laser.
6. Calculate the focal length of
lens of dispersive power 0.01 which should be placed in contact convex lens of
focal length 84cm and dispersive power 0.021 to make the achromatic
combination.
7. In Newton rings experiment the
diameter of 10th dark ring is 0.433cm.Find the wavelength of incident light. If
the radius of curvature is 70cm.
8. Calculate thickness of quarter
wave plane given e
m =1.533, 1.544 0 m = and l =5000A0
SECTION-B
Answer All the Questions
5x10=50M
9. a) What is chromatic
aberration. Derive condition for achromatism when the lenses are in contact.
(or)
b) Explain Spherical aberration
with neat diagram. Describe eliminations of spherical aberration using to plano
convex lenses separated by distance.
10. a) Describe Biprism
experiment to produce interference fringes and determination of wavelengthof
light.
(or)
b)Describe with theory of Newton
rings experiment to determine wave length of onochromatic source of radiation.
11. a) Describe fraunhofer
diffraction due to single slit.
(or)
b) What is Zone plate? Explain
its construction and working.
12. a)Explain the construction
and working of Nicol prism.
(or)
b)Give construction and working
of Babinet's compensator. How it works to analyse elliptically polarised light.
13. a)Explain construction and
working of Ruby laser length with neat diagram.
(or)
b)Explain the working He-Ne Laser
with diagrams.
