Question

State Snell's law of refraction of light.
When a ray of light travelling in air enters obliquely into a glass
slab, it is observed that the light ray emerges parallel to the incident
ray but it is shifted sideways slightly. Draw a labelled ray diagram
to illustrate it.​

Answer 1

Answer:

Snell's law states that the ratio of the sine of angle of incidence in the first medium to the sine of angle of refraction in the second medium is a constant for a given pair of media and for a given wavelength of light. This constant is called refractive index.

Answer 2

Answer:

(b)

Explanation:

(a) Snell’s Law– The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for the light of a given colour and for the given pair of media.