Physical Optics Test Online Preparation Mcqs

Physical Optics Test Online Preparation Mcqs With Answers Start Below

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Question 1 of 15

1. A light ray travelling from denser to rarer medium suffers a phase change of
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. When crest of one wave falls over the trough of the other wave, this phenomenon is known as
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. Two sources of light are coherent if they emit rays of
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. When light incident normally on thin film, the path difference depends upon
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. In Young’s double slit experiment, the fringe spacing is equal to (d=slit separation and D = distance of screen from slits)
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. In an interference pattern
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. ________ gives the definition of metre in terms of wavelength of red cadmium light
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. Signal form the T.V remote control travels
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. Light on passing through a Polaroid is
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm, we observe 2000 fringes. What will be wavelength of light used?
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. In double slit experiment, if one of the two slit is covered then
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. Huygen wave theory explain
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. A compact disc having rulings of 0.5 μm each wide shows colours under white light due to
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. Wavelength of X-rays falling at glancing angle of 30° on a crystal with atomic spacing 2 x 10-10m for the first order diffraction is
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. In Young’s double slit experiment, the separation between the slit is halved and distance the between the slit and screen is doubled. The fringe width is
A.
B.
C.
D.

Question 15 of 15


 

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