Physics Optical Instruments Test 2 Mcqs Online

Maan AliLast Updated: October 13, 2025

Important Optical Instruments Test 2 Question Answer

Total Questions: 20
Time Allowed: 10 Minutes
Total Marks: 20
How to Attempt Test: Please choose the right Option in MCQ-type question.
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Physics Optical Instruments Test 2 Practice Mcqs With Explanation

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Engineering Subject

1. The time taken by the mirror M to rotate through an angle 2π/8 is

2. The speed of light in other material is always

3. Who attempted to measure the speed of light

4. Graham Ball photo phone used a modulated beam of

5. A telescope is rotatable about the same vertical axis as the turntable, with a scale which is

6. A wide objective and the use of blue light of short wavelength produces

7. The resolution of microscope depends on objective’s

8. At certain speed, the time taken by light in moving from M to m and back to M is equal to the time taken by

9. A double convex lens acts as a diverging lens when the object is

10. Fiber optics also used to transmit light

11. The minimum distance between an object and its image in convex lens is

12. Angle subtended by any side of the eight-sided mirror at the centre is

13. In photo phone modulated beam of reflected sun light focused on a detector several hundred meters away with the device

14. The time taken by light for its passage from M to m and back is

15. The advantage / advantages of fiber optics than radio wave carriers

16. An image formed by a concave lens is always

17. Fire optics has ability to transmit

18. Photo phone was invented by

19. The refracting edge of the prism must be parallel to the axis of rotation of the telescope, so that the turn table is leveled using

20. A circular scale is attached and graduated in


 

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Maan AliLast Updated: October 13, 2025

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