Lakhmir Singh and Manjit Kaur Solutions for Chapter: Light, Exercise 1: Very Short Answer Type Questions

In a kaleidoscope, a pattern seen once can never be seen again.

The angle of _____ equals the angle of reflection.

A person $1 \mathrm{m}$ in front of a plane mirror seems to be _____ $\mathrm{m}$ away from his image.

The size of pupil becomes _____ when you see in dim light. Choose from:(large/small).

Night birds have _____ cones than rods in their eyes. Choose from:(more/fewer).

The image of an object persists on the retina of an eye for about _____ second even after the object has disappeared.

Choose the answer from the options given in the bracket. ($\frac{1}{16}$,$\frac{1}{6}$,$\frac{1}{9}$ )

If the still pictures of a moving object are flashed on our eyes at a rate faster than _____ pictures per second, the eye perceives the object as moving.

In a movie, the still pictures in proper sequence are projected on the screen usually at the rate of _____ pictures per second.