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.