Geometrical Optics – Online MCQs – Physics 10th

1. The angle of reflection and the angle of reflection are:

2. When a light ray enters from a denser medium to a rare medium, it bends:

3. The ability to distinguish between two closely placed objects or point sources is called an instrument:

4. In a compound microscope, the focal length of the objective lens is:

5. The ratio of the sine angle of incidence to the sine angle of refraction gives us a constant called the:

6. In the normal human eye, the image is formed:

7. The ciliary muscles of the eye control the:

8. In a concave mirror, the image size depends upon:

9. The power of a lens is measured in:

10. The reciprocal of a lens focal length is called:

11. Power of a lens is defined as the reciprocal of its:

12. In the photograph enlarger, the object is placed:

13. The defect in which the image is formed beyond the retina is called:

14. magnifying glass is also called:

15. A spherical mirror whose inner curved surface is reflecting is called:

16. The S.I unit of power of a lens is:

17. Which statement is correct?

18. The short-sightedness can be corrected by using:

19. Refraction of light is caused by a change in speed, at the interface of two different mediums:

20. The outer concentric shell of the fibre optics is called: