Question

In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium(a) the frequency is different(b) the coefficient of elasticity is different(c) the speed is different(d) the amplitude is smaller

Answer 1

c) the speed is different

Answer 2

Answer:

C) The speed is different

Explanation:

When a ray of light travels from one medium to another medium it always bends. If first medium is rarer and the second medium is denser i will bend towards the normal, while when the second medium is rarer it bends away from the normal. The bending is caused due to refractive index of second medium with respect to first.

u2 = Speed of light in first medium/ speed of light in second medium

or speed of light in second medium = Speed of light in first medium/u2

Where u2 is the refractive index of second medium relative to the first medium. Thus, it is observed that on passing through another medium speed of light changes.