Light passes from a material a, which has an index of refraction of 4/3, into material b, which has an index of refraction of 5/4. if the angle of incidence is 30°, what is the angle of refraction? (a) 14.1° (b) 32.2° (c) 28.4° (d) 46.0° (e) 51.0°

(b) 32.2°

Explanation:

Using Snell's law as:

Where,  

 is the angle of incidence  ( 30.0° )

is the angle of refraction  ( ? )

is the refractive index of the refraction medium  (Material B, n=5 / 4)

is the refractive index of the incidence medium (Material A, n=4 / 3)

Hence,  

Angle of refraction = = 32.2°