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A flood light is covered with a fitter t...

A flood light is covered with a fitter than transmits red light. The electric field of the emerging beam is represented a sinusolidal plane wave
`E_(x)=36 sin (1.20xx10^(7)z-3.6xx10^(15)t) V//m`
The average intensity of beam is `"watt"//("metre")^(2)` will be

A

`6.88`

B

`3.44`

C

`1.72`

D

`0.86`

Text Solution

Verified by Experts

The correct Answer is:
c
`I_("ever")=(1)/(2)epsilon_(0)E_(0)xxC= 1.719 W//m^(2)`
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