Question

A light beam initially traveling in air strikes a transparent medium. If the angle of incidence
and refraction are respectively, 53 0 & 37 0 what is the speed of the light in the medium ?(sin
37 0 =0.6 sin 57=0.8 & C = 3x10 8 m/s
A. 2.75*10 8 m/s B. 2*10 8 m/s

C. 2.25*10 8 m/s D. 2.5* 10 8 m/s

Answer 1

As speed of light is lesser in medium B therefore its refractive index will be greater than medium A it means medium B is denser than medium A , we know when light refracts in a denser medium from a rarer medium , it bends towards the normal.So the beam will refract toward the normal.