1. A smooth shining surface, which rebounds the light back in same or in different direction, is called

2. Light enters the eye through

3. In case of reflection of light, the angle of incidence (i) and the angle of reflection (r) are related as

4. The defect due to which a person is not able to see the distant objects clearly

5. The splitting of white light into its seven constituent colours is called

6. Light passing through a prism splits into seven colours. This is called

7. An owl can see clearly at night but not day time because it has

8. When we stand in front of our dressing table, our left hand seems to be right and right seems to be left. This is called

9. Rainbow is a natural phenomenon showing

10. Band of seven colours is called

11. Name the type of mirror used as a backview mirror.

12. Which one of the following statements is correct regarding rods and cones in the human eye?

13. The amount of light entering the eye is controlled by

14. If the angle of incidence of light falling on a plane mirror is 30°, what will be the angle of reflection?

15. Myopia can be corrected by using a

16. What is the angle of incidence of a ray if the reflected ray is at an angle of 90° to the incident ray?

17. Front balged part of the eyeball is called

18. Visually impaired people can read and write using

19. The image formed by a camera and a simple microscope are respectively

20. Beam of light striking the reflecting surface is called