A monochromatic light wave with wavelength 
and frequency v 1 in air enters another medium. If the angle of incidence and angle of refraction at the interface are 45° and 30° respectively, then the wavelength 
and frequency v 2 of the refracted wave are:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
By using Snell's law,
, the refractive index is
Also using the relation n= 
where n is the refractive index, c is the velocity of light in air and v is the velocity in the medium
The velocities are given by
and 
The frequency of light does not change when the medium changes.
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