The refraction of light on going from one medium to another takes place according to two laws which are known as the laws of refraction of light. These laws are
1.The ratio of sine of angle of incidence to the sine of angle of refraction is always constant for the pair of media in contact.
`sini/sinr=mu=`constant
This constant is called refractive index of the second medium with respect to the first medium. Refractive index is also defined as the ratio of speed of light in vacuum to the speed of light in medium.This law is called Snell's law of refraction.
2.The incident ray, refracted ray and normal all lie in the same plane.
(i) When light travels from air to glass,

Options

A. angle of incidence `gt` angle of refraction
B. angle of incidence `lt` angle of refraction
C. angle of incidence `=` angle of refraction
D. can't say

Answer

A