Question

What is the angle of refraction in a glass if a ray of light moves from air to glass at an angle of incidence of 45 degree?

Please help​

Answer 1

Answer:

Refractive index of water wrt air = 4/3,

refractive index of glass wrt air = 3/2.

Refractive index of glass wrt water = refractive index of glass wrt air * refractive index of air wrt water = 3/2 * 3/4 = 9/8. Refractive index = (sin i)/(sin r) => 9/8 = (sin 30)/(sin r) => sin r = (8/9)sin 30 = (4/9) => r = arcsin (4/9) =26.39 degrees.

Explanation: