Calculate the wavelength, frequency, and wave number of a light wave whose period is `2.0 xx10^(-10) s`.

Explanation

Frequency `(v) =(1)/("Period") = (1)/(2.0xx 10^(-10)s) = 5 xx 10^(9) s^(-1)`
Wavelength, `lamda = (c)/(v) = (3.0 xx 10^(8) ms^(-1))/(5 xx 10^(9) s^(-1)) = 6.0 xx 10^(-2) m`
Wave number, `bar(v) = (1)/(lamda) = (1)/(6 xx 10^(-2)m) = 16.66 m^(-1)`