Question

In the case of refraction of light :
a) Frequency changes
b) Speed changes
c) Wavelength changes

A

a is correct

B

b and c are correct

C

a, b, c are correct

D

a and b are correct

Medium
Updated on : 2022-09-05
Solution
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Correct option is B)

In the process of refraction, speed of light and wavelength of light changes. 

In a medium, speed of light is given by   where is refractive index of the medium. Hence, for medium with different refractive index , speed of light is different. 

Frequency will not change because at the boundary/interface of the medium, the number of waves you send is the number of waves you receive at the other side, almost instantly. 

Since, for a travelling wave we have a relation
Hence wavelength also changes in the process of refraction.

So, option B is correct.

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