Q.

What happens to the frequency and the wavelength when light passes from a rarer to a denser medium?

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a

Wavelength remains unchanged but frequency changes

b

They are independent

c

Wavelength and frequency changes

d

Wavelength changes but the frequency remain unchanged

answer is D.

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Detailed Solution

When light passes from a rarer to a denser medium, the wavelength of light changes but the frequency remains unchanged. Therefore, there is no change in the frequency of light, only the wavelength changes.
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