Question

A ray of light travelling in air falls on a surface of transparent material at an angle of 45 degree to the normal it bends by 50 degree after reflection. Find tha refractive index of the material. ​

Answer 1

Answer:

We know that refractive index of air is 1

Here the incidence angle is i=53°

Using snell's law

n air

sini=n

glass

sinr

sin53=1.6sinr

5

4

=1.6sinr

r=30

o