Geometrical Optics – Online MCQs – Physics 10th

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

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

3. The angle of incidence that causes the refracted ray in the rarer medium to bend through 90° is called the:

4. A ray of light incident at an angle to the normal bends towards the normal when it enters into an optically:

5. The focus lies behind the mirror in:

6. In a compound microscope, as compared to an objective, the eyepiece lens has a focal length:

7. A ray of light bends away from the normal when it enters an optically

8. A magnifying glass forms:

9. Concave lens is also called:

10. The inner part ‘core’\ of an optical fibre is coated with another material called “cladding” which has:

11. The size of the image is always smaller than the object in:

12. The long-sightedness can be corrected by using:

13. The power of a lens is measured in:

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

15. The convex lens becomes a magnifying glass when:

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

17. The inner part of the fibre optics which carries light is called:

18. In the camera the distance between lens and film is fixed and is equal to:

19. An optical fiber comprises:

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