Question text
27 Light travelling in air is incident on a water surface. The refractive index of water is 1.3 and the angle of refraction in the water is 40°. What is the angle of incidence in the air? A 30° B 50° C 52° D 57°
27 Light travelling in air is incident on a water surface.
The refractive index of water is 1.3 and the angle of refraction in the water is 40°.
What is the angle of incidence in the air?
A 30° B 50° C 52° D 57°
Select your answer: