Calculate the frequency and wave number of radiations with wavelength 480 nm.

Answer

`6.25 xx 10^(14) s^(-1), 2.08 xx 10^(6) m^(-1)`

Explanation

Frquency , `v = c/lambda`
`:. " " v = (3.0 xx 10^8 ms^(-1))/(480 xx 10^(-9)m)`
`=6.25 xx 10^(14) s^(-1)`
Wave number, `bar(v) = 1/lambda `
`= 1/(480 xx 10^(-9))`
`= 2.08 xx 10^(6) m^(-1)`.