Question

Ray of light which is incident in air on the surface of a glass block is debited through 15 degree the angle of incidence in air is 60 degree what is the angle of refraction in glass also calculate the critical angle for glass real interface

Answer 1

Answer:

Angle of incidence = 60°°,

Angle of deviation = 15°°,

angle of refraction = 60-15 = 45 °°

μg =   sin i

          sin r      

     = sin60      =   1.225

        sin45

       

sin c = 1 / μg

c = sin⁻¹( 1 / 1.225 ) = 55°5'