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Question

A beam of monochromatic light is refracted from vacuum into a medium of refractive index 1.5. The wave length of refracted light will be:

A
dependent on intensity of refracted light
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B
same
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C
smaller
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D
larger
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Solution

The correct option is C smaller
If a beam of monochromatic light is refracted from vacuum into a medium of refractive index 1.5, the wavelength of refracted light will be smaller because refractive index of medium is inversely proportional to the wavelength.

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