Question

A source of light emit light waves with wavelength of 550 nm. Find the time period of the wave length

Answer 1

Answer

$f(frequency)={c(speed \ of \ light)\over \lambda(wavelength)}$

= $3×10^8\over 550×10^{-9}$

=$5.4×10^{14}Hz$

$T(time \ period ) ={1\over f}$

=$183.3×10^{-17}seconds$