Geometrical Optics – Online MCQs – Physics 10th

1. When the angle of incidence becomes larger than the critical angle, then

2. In a telescope, as compared to an eye piece, the objective lens has a focal length:

3. To view dim stars, we use:

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

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

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

7. 1 diopter = __________

8. The ciliary muscles of the eye control the:

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

10. In the optic fiber, the core is made of glass or plastic of relatively:

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

12. A magnifying glass forms an enlarged:

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

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

15. One of the angles of a right-angled prism is

16. Tick the correct mirror equation:

17. Concave lens is also called:

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

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

20. The focus lies behind the mirror in: