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The mean intensity of radiation on the surface of the Sun is about watt. The r.m.s value of corresponding magnetic field approximately is
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a
10-2
b
102
c
10-4
d
105
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Correct option is D
mean Intensity is I = (Brms)22μ0CBrms=2I μ0C =2 × 107 × 4π × 10-7 × 3 × 108 =24π × 108≈105Similar Questions
In an electromagnetic wave, the magnetic field is given by . The intensity of electromagnetic wave is about (in )
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