Question

For the same angle of incidence in media ABC the angle of refraction at 20 degree 30 degree 40 degree respectively in which medium the velocity of light be maximum give reason to support

Answer 1

Speed of light in a medium v and refractive index μ of this medium we have

μ= c / v

here,

c= speed of light in air

The refractive index for a medium is given by the formula:

μ=sin i /sin r

where,

i is the angle of incident ray.

r is the angle of refractive ray.

The above formula states that for the given angle of incidence , the angle of refractive is less in a medium means the refractive index of the medium is greater.

According to the given problem we have the medium A having the the highest refractive index and lowest speed of light is lowest since it has the smallest angle. In medium C has the lowest refractive index and highest speed of light in this medium since it had the largest angle.

Answer 2

For 2 marks we can write this much; no need for writing more. Hope it helps.