Home Physical Optics Test Online Preparation Mcqs

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

Question 1 of 15

Question 2 of 15

2. In the shadow of a ball the central portion appears bright that happens due to
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. 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 3 of 15

Question 4 of 15

4. The condition of constructive interference of two coherent beams is that the path difference should be
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

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

Question 5 of 15

Question 6 of 15

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

Question 6 of 15

Question 7 of 15

7. The locus of all points in a medium having the same phase of vibration is called
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. In monochromatic red light, a blue book will probably appear to be
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

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

Question 9 of 15

Question 10 of 15

10. A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. 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 11 of 15

Question 12 of 15

12. Longitudinal waves do not exhibit
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

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

Question 13 of 15

Question 14 of 15

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

Question 14 of 15

Question 15 of 15

15. The blue colour of the sky is due to
A.
B.
C.
D.

Question 15 of 15


 

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