Question

Calculate the wavelength, frequency and wavelength of a light wave whose time period is $2.0\times {10}^{-10}sec$.

Answer 1

Given that. $T=2.0\times {10}^{-10}$

$\vartheta =\frac{1}{2.0\times {10}^{-10}}=5\times {10}^{9}Hz$

Wavelength $=\frac{c}{\vartheta }=\frac{3\times {10}^8}{5\times {10}^9}$

$=0.06m$