Light Energy

Front

A smooth shining surface, which rebounds the light in the same or in different directions, is called_____________.

Back

a mirror

Front

Beam of light striking a reflecting surface is called _____________.

Back

incident ray

Front

Band of seven colours is called _____________.

Back

spectrum

Front

In case of reflection of light, the relationship between angle of incidence (i) and the angle of reflection (r) may be expressed as: i = r, i < r, i > r, undetermined

Back

i = r

Front

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

Back

45°

Front

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

Back

dispersion

Front

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

Back

30°

Front

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

Back

lateral inversion

Front

Rainbow is a natural phenomenon showing _____________.

Back

dispersion

Front

Which of the following is not a luminous object? Sun, Candle, Moon, Tube light

Back

Moon