In a travelling plane electromagnetic wave the maximum magnetic fields is 2.52×10−4T. The intensity of the wave is (Assume , μ0=1.26×10−6H/m)

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4.6×106W/m2

7.56×106W/m2

3.78×106W/m2

6.4×106W/m2

answer is B.

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Detailed Solution

Intensity of electromagnetic wave in terms of magnetic field isI=12B02μ0C I=12×2.52×10−4×2.52×10−4×3×1081.26×10−6 I=7.56×106W/m2

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