The wavelength of a beam of light in air medium is 5200 Å, the wavelength and frequency in glass of R.I. 1.6 are nearly

Options

A. `3500^(@), 5.77 xx 10^(14) Hz`
B. `4000^(@), 5.77 xx 10^(14) Hz`
C. `3250^(@), 5.77 xx 10^(14) Hz`
D. `3300^(@), 5.77 xx 10^(14) Hz`

Answer

C

Explanation

`lambda_(g) = (lambda_(g))/(mu_(g)) = (5200)/(1.6) = 3250 Å`
`n = (v_(a))/(lambda_(a)) = (3 xx 10^(8))/(5.2 xx 10^(-7))`
`= 5.77 xx 10^(14) Hz`