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Component of electric field of electroma...

Component of electric field of electromagnetic wave is as following :
`E_(x)=10^(2)sin(pi(9xx10^(14)t-3xx10^(6)z))`,
`E_(y)=0, E_(z)=0`, then intensity of wave is ….

A

`13.3 Wm^(-2)`

B

`0.133 Wm^(-2)`

C

`1.33 Wm^(-2)`

D

`13.3xx10^(-12)Wm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Intensity of wave,
`I=c in_(0)E_(rms)^(2)`
`=3xx10^(8)xx8.85xx10^(-12)xx(100)/(2) " " [because E_(rms)=(E_(m))/(sqrt(2))]`
`therefore I=13.3Wm^(-2)`
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