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

Question 1 of 15

Question 2 of 15

2. 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 2 of 15

Question 3 of 15

3. The central image in compound microscope is
A.
B.
C.
D.

Question 3 of 15

Question 4 of 15

4. The electrical signals change into light signals for transmission through optical fibre. A light pulse represent.
A.
B.
C.
D.

Question 4 of 15

Question 5 of 15

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

Question 5 of 15

Question 6 of 15

6. In a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to suffer from
A.
B.
C.
D.

Question 6 of 15

Question 7 of 15

7. 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 7 of 15

Question 8 of 15

8. Least distance of distinct vision of normal and healthy people
A.
B.
C.
D.

Question 8 of 15

Question 9 of 15

9. Dispersional effect may produce error in light signals. This type of error is minimum is
A.
B.
C.
D.

Question 9 of 15

Question 10 of 15

10. Who invented photo phone?
A.
B.
C.
D.

Question 10 of 15

Question 11 of 15

11. Typical fibre optic communication system uses light of which wavelength
A.
B.
C.
D.

Question 11 of 15

Question 12 of 15

12. The minimum distance between an object and its real image in a convex lens is
A.
B.
C.
D.

Question 12 of 15

Question 13 of 15

13. In optic fiber transmission system __________ are used to regenerate the dim light signal.
A.
B.
C.
D.

Question 13 of 15

Question 14 of 15

14. Michelson devised the formula to calculate speed of light
A.
B.
C.
D.

Question 14 of 15

Question 15 of 15

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

Question 15 of 15


 

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