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The mean intensity of radiation on the s...

The mean intensity of radiation on the surface of the Sun is about `10^(s)W//m^2`. The rms value of the corresponding magnetic field is closed to :

A

`10^(2)T `

B

1T

C

`10^(-2) T `

D

`10^(-4) T `

Text Solution

Verified by Experts

The correct Answer is:
D
`I = (B_(0)^(2))/( 2 mu _(0))`
`B_(0) = sqrt((2 mu_(0) I)/(C))`
`B_(rms) = sqrt((mu_(0) I)/( C)) = sqrt(( 4 pi xx 10^(-7) xx 10 ^(8))/(3 xx 10^(8)))`
`~~ 10^(-4) T `
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