A light of wavelength 6000 A travels from rarer medium to denser medium of refractive index 1.5, If its frequncy in rarer medium is `5 xx 10^(14)` Hz, then its frequency in denser medium will be

Options

A. `3.3 xx 10^(14) Hz`
B. `5 xx 10^(14) Hz`
C. `2.5 xx 10^(7)m`
D. `7.5 xx 10^(14) Hz`

Answer

B

Explanation

`lambda_(a) = 6000Å, mu_(m) = 1.5 xx 10^(14) Hz, n_(d) = ?`
`n_(d) = n_(a) = 5 xx 10^(14)Hz`
Since due to refraction of light there is no change in frequency of light.