Question

When a light ray is incident from air (n=1) on a flat surface of glass (n=1.5) which of the following is true?

A. The reflected angle is larger than the incident angle

B. The reflected ray is the same as the incident angle

C. The refracted angle is the same as the incident angle

D. The refracted ray is larger than the incident ray

E. B & C

F. A & D

Answer 1

Solution-(B) The reflected ray is the same as the incident angle

Note-(1) by the law of reflection, incidence angle is equal to the reflection angle (i=r)

(2) by Snell's law

Where n1=1 ,n2=1.5

= incidence angle

=refraction angle

Therefore

Here or incidence angle is greater than the refracted angle