Page 1 - HA-refraction of light
P. 1
Objective Questions:
1. A ray of light passes from a medium X to another medium Y. No refraction of light
occurs if the ray of light hits the boundary of medium Y at an angle of:
o
(a) 120
o
(b) 90
o
(c) 45
o
(d) 0
2. A ray of light travelling in a medium meets the surface of another medium that is
optically denser. The light ray while entering the denser medium will
a) reflect back to the rarer medium.
b) go straight into the second medium.
c) bend towards the normal.
d) bend away from the normal.
3. A ray of light goes from air to water. Therefore, the angle of incidence is
a) equal to the angle of refraction.
b) more than the angle of refraction.
c) less than the angle of refraction.
d) zero for all angles of refraction.
4. A medium, denser than air, is the medium in which velocity of light is
a) less than the velocity of light in air.
b) zero.
c) more than the velocity of light in air.
d) equal to the velocity of light in air.
5. The stars seem higher than they actually are due to the
a) total internal reflection.
b) dispersion.
c) reflection.
d) atmospheric refraction
