Question

When a light ray passes from a ………….medium to a rarer medium, it bends away from the normal. जेव्हा प्रकाश किरण ……... माध्यमातून विरल माध्यमात जातो तेव्हा तो स्तंभिकेपासून दूर जातो​

Answer 1

Answer:

When a ray of light passes from a rarer to denser medium it bends towards the normal.

The incident ray,the refracted ray and the normal to the refracting surface at the point of incidence lie in the same plane.

For a given pair of media and for a given colour of light the ration between the sine of angle of incidence to the sine of refraction is a constant.This constant is known as refractive index of the second medium with respect to the first medium.

When a ray of light passes through a glass slab, ∠i,∠r and the normal all lie in the same plane.

When a ray of light passes from one medium to another, here from air to glass or glass to air, the ratio

sinr

sini

=constant