QJEEM19Ph61b0: JEE Main 2019 Physics - Class 12 JEEM19Ph61b0 Solution: The mean intensity of radiation on the surface of the Sun is…

Question

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The mean intensity of radiation on the surface of the Sun is about 10⁸ W/m² . The rms value of the corresponding magnetic field is closet to :

Accepted Answer

I =

ε_{0} C E_{r m s}^{2}

& E_rms = cB_rms

I =

ε_{0}

C³ B

_{r m s}^{2}

B

_{r m s}

=

\sqrt{\frac{I}{\in_{0} C^{3}}}

B_rms

\approx

10^{$-$ 4}

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