Question

(b) interference
100. A ray of light is incident on a plane mirror at
an angle of 40° with respect to surface normal.
When it gets reflected from the mirror, it
(d) reflection
(a) diffraction
(c dispersion
[CDS 2017-11)
undergoes a deviation of
(a) 40°
(b) 100°
(c) 90°
( 80
101. Which one of the following types of glasses is
used for making onticolinat​

Answer 1

Answer:

When a light ray falls on a mirror at an angle 30

o

, then the reflected ray will make the same angle with the plane as shown in fig. (i)

In order to make the reflected ray vertical, the mirror should be rotated at an angle of 60

o

.

So, the mirror should be tilted by

2

60

o

=30

o

as can be seen in Fig(ii)

Explanation:

if I am right