Embibe Experts Solutions for Chapter: Light, Exercise 1: Exercise

Which one of the following can correct vision defects?

Light is falling on surface ${\mathrm{S}}_1, {\mathrm{S}}_2, {\mathrm{S}}_3$ as shown in the figure below:



Surfaces on which the angle of incidence is equal to the angle of reflection is/are:

If the angle of incidence is _____ (ninety/zero) the incident ray strikes the surface normally.

The set of colours formed on splitting of white light is called the _____ of white light.

 A small hole P is made in a piece of cardboard. The hole is illuminated by a torch as shown in the figure below. The ray of light coming out of the hole falls on a mirror.
 

At which point should the eye be placed so that the hole can be seen?

Name the part of the eye which controls the amount of light entering the eye.

Name the phenomenon which enables us to see movies in a cinema hall.

(Choose from: Dispersion of vision/ Persistence of vision/ Refraction of vision)

Name the part of the eye which converges light rays to form the image. (Choose from: Retina/ Eye lens/ Optic nerve)