Question

Maurice directs a beam of light on a sheet of glass at an angle of 51°. What is the angle of refraction in the glass? The refractive index of glass is 1.46.

A. 22°
B. 29°
C. 32°
D. 36°

Answer 1

32°

Step-by-step explanation:

Answer 2

Snell's law states that:

n1/n2 = (Sin Ф2)/(Sin Ф1)

Where n1 =1 , n2 = 1.46, Ф1 = 51°

Therefore,

Sin Ф2 = (Sin Ф1)/1.46 = (Sin 51) / 1.46 = 0.5323
Then,
Ф2 = Sin^-1 (0.5323) ≈ 32°