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The rms value of the electric field of t...

The rms value of the electric field of the light from the sun is `720 N//C` The total energy density of the electromagnetic wave is

A

`4. 58 xx 10^(- 6) Jm^(- 3)`

B

`6. 37 xx 10^(-9) Jm^(- 3)`

C

`81. 35 xx 10^(-12) Jm^(- 3)`

D

`3. 3 xx 10^(-3) Jm^(-3)`

Text Solution

Verified by Experts

The correct Answer is:
A
Total average energy =`in _0 (E^2)_(rms)`
= `8. 85 xx 10^(-12) xx (720)^2`
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