Question

During refraction, waves bend when they pass from one medium to another. The waves refract because their ________ changes. A) appearance B) intensity C) size D) speed

Answer 1

Answer: The correct option is D.

Explanation:

Refraction is the phenomenon in which the direction of the ray of the ray of light gets changed while ray of light travels from one medium to another medium. It is due to the change in the speed of ray of light while travelling from one medium to another.

When the light travels from rare medium to rarer medium then light gets bend towards normal.

The waves refract because their speed change.

Answer 2

Answer:

Speed

Explanation:

When waves travel in different mediums then due to change in the speed of the wave the path of the wave will change.

Initially wave is travelling in the given direction with some speed "v"

now when the medium of the wave will change then it will change the speed as we know that

$\frac{v_2}{v_1} = \frac{\mu_1}{\mu_2}$

now due to this change in the refractive index of the speed and hence the wavelength will change in different mediums

So here correct answer will be

D) Speed