Question

a ray of light incident on a refracting surface at 30 degree with the surface if the angle of refraction is 45 degree refractive index of the medium this​

Answer 1

Answer:

n = 0.81

Explanation:

n = sin i / sin r

i = 90° - 30° = 60°           r = 45°    

n = sin 45 / sin 60

n = 1 / √2 / √(3/2)

n = √(2/3)

n = 0.81