Q.

A light wave has a frequency of 4×1014 Hz and a wavelength of 5×10−7 meters in a medium. The refractive index of the medium is

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a

1.5

b

1.33

c

1.0

d

0.66

answer is A.

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Detailed Solution

μ=cv=cfλ=3×1024×1014×5×10−7=1.5
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