Q.
A light ray of frequency v and wavelength λ enters a liquid of refractive index 3/2. The ray travels in the liquid with
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a
frequency v and wavelength 23λ
b
frequency v and wavelength 32λ
c
frequency v and wavelength λ
d
frequency 32 v and wavelength λ
answer is A.
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Detailed Solution
μ=cv=vλvλ′32 = λλ′ o r λ′= 2λ3Note that the frequency remains unchanged.
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