A plane light wave in the visible region is moving along the Z-direction. The frequency of the wave is` 0.5×10^(15)` Hz and the electric field at any point is varying sinusoidally with time with an amplitude of 1V/m. Calculate the energy densities of the electric and magnetic fields.

Explanation

<`U_(E)ge(1)/(4)epsilon_(0)E^(2)=(1)/(4)xx8.85xx10^(-12)xx(1)/(4)-0.55xx10^(-12)J//m^(3)`
<`U_(B)ge(B_(0)^(2))/(4mu_(0))=(1)/(4)(E_(0)^(2))/(4mu_(0)C^(2))=0.55xx10^(12)J//m^(3)`