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
A. `3.3 xx 10^(14) Hz`
B. `5 xx 10^(14) Hz`
C. `2.5 xx 19^(8) Hz`
D. `7.5 xx 10^(14) Hz`

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Correct Answer - B
There is no change in frequency.
`:. f = 5 xx 10^(14) Hz`

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