Physics Optical Instruments Test Online Preparation Mcqs

Physics Optical Instruments Test Online Preparation Mcqs With Answers Start Below

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Question 1 of 15

1. The equation αmin = 1.22 λ/D was devised by
A.
B.
C.
D.

Question 1 of 15

Question 2 of 15

2. Large astronomical telescopes are of which type?
A.
B.
C.
D.

Question 2 of 15

Question 3 of 15

3. If a lens is covered with wax then
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. Light signals pass through multimode graded index fiber due to
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

5. Michelson calculated the speed of light using the instrument
A.
B.
C.
D.

Question 5 of 15

Question 6 of 15

6. If an object is placed away from ‘2f’ of a converting lens, then the image will be
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. Two convex lenses of equal focal length ‘f’ are placed in contact, the resultant focal length of the combination is
A.
B.
C.
D.

Question 7 of 15

Question 8 of 15

8. The speed of light in the medium of refractive index of 1.5 is
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. If the red light is replaced by blue light illuminating the object in a microscope the resolving power of the microscope
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. A point where the incident parallel rays of light converge or appear to diverge after passing through a lens is called
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. There is noticeable boundary between core and cladding for
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. Critical angle is that incident angle in denser medium for which angle of refraction is
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. A spectrometer is used to find
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. A surf board moves at a aped of 5ms-1on the crests of the wave. The distance between wave crests is 10m. What is the frequency of the wave motion
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

15. Which colour has the maximum angle of deviation in prism
A.
B.
C.
D.

Question 15 of 15


 

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