In an electromagnetic wave, the magnetic field is given by B=2×10-7sin0.5×103x+1.5×1011t tesla . The intensity of electromagnetic wave is about (in Wm2 )

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answer is D.

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Detailed Solution

Intensity of electromagnetic wave is B022μ0chere B0=2×10-7so intensity I =4×10-14×3×1082×4π×10-7=302π≈5

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