When a monochromatic ray of light travels a medium of refractive index n1 to a medium of refractive index n2(n2>n1) , its

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Speed increase by a factor n2(n2>n1)

Speed decreases by a factor n2/n1

Frequency decreases by a factor n2/n1

Wavelength increases by a factor n2/n1

answer is B.

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Detailed Solution

When light travels from rarer to denser medium, the speed of light decreases by factor of μ,[μ=n2n1] wavelength also decreases. Frequency does not change as frequency depends only on source.

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