Light - Exemplar Solutions 3
NCERT Exemplar Solutions
CHAPTER – 16
LIGHT
SHORT ANSWER QUESTIONS
14. What happens to light when it gets dispersed ? Give an example.
Ans: Light is split into its constituent colours. Rainbow is a natural phenomenon showing dispersion of light.
15. Draw Fig.16.6 showing the position of the plane mirror. Also, label the angle of incidence and angle of reflection on it.
Ans:
16. Look at Fig.16.7. Can the image of the child in it be obtained on a screen ?
Ans: No, the image of the child cannot be obtained on a screen.
17. Eyes of the nocturnal birds have large cornea and a large pupil. How does this structure help them ?
Ans: A large pupil and large cornea allows more light to enter their eyes and they can see objects even in faint light.
18. What kind of lens is there in our eyes ? Where does it form the image of an object ?
Ans: The type of lens in our eyes is convex. It forms the images of the objects on the retina.
19. Which part of the eye gets affected if someone is suffering from cataract ? How is it treated ?
Ans: Eye lens gets affected if someone is suffering from cataract. If people suffering from cataract the eye lens becomes clouded. Cataract is treated by replacing the opaque lens with a new artificial lens.
