Question

A light ray enters the glass slab as shown. What will be the angle of refraction, ∠r of the light ray for both the cases: Given µg = √3.

• A. 60°, 0°
• B. 60°, 90°
• C. 30°, 0°
• D. 30°, 90°

Answer 1

The correct option is C 30°, 0°

• Snell’s law formula is expressed as

• sin isin r=

• i= angle of incidence.

• r= angle of refraction.

• =refractive index of medium.

• sin isin r=

• sin 600sin r=3

• sin r= sin 6003

• sin r =12

• So angle of refraction is 300

• Also sin 00sin r=3

• sin r = 0/3

• sin r = 0

• So angle of refraction is 00.