In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of `2.0xx10^10`Hz and amplitude `48Vm^(-1)`. The total energy density of the electromagnetic field of the wave is :

Options

A. `1.0xx10^(-2)m`
B. `1.5xx10^(-2)m`
C. `2.5xx10^(-2)m`
D. `3.0xx10^(2)m`

Answer

B

Explanation

Here, `upsilon=2.0xx10^(10)Hz, E_(0)=48Vm^(-1),c=3xx10^(8)ms^(-1)`
Wavelength of the wave,
`lambda=(c)/(upsilon)=(3xx10^(8))/(2.0xx10^(10))=1.5xx10^(-2)m`