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The electric field of a plane electro magnetic wave, propagating along z-axis is given by
$E = 2 \sin (8 π x 10^{14} t - \frac{8 π}{3} x 10^{6} z) v / m$
Then average intensity of the wave is

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8.16 mW/m2

5.31 mW/m2

12.28 mW/m2

28.14 mW/m2

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detailed solution

Correct option is B

I=12ε0Em2.C =12 x 8.85 x 10-12 x (2)2 x 3 x 108 W/m2 =5.31 mW/m2

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The electric field of a plane electro magnetic wave, propagating along z-axis is given byE=2 sin 8π x 1014t-8π3 x 106zv/mThen average intensity of the wave is

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Ready to Test Your Skills?

free study material

The electric field of a plane electro magnetic wave, propagating along z-axis is given by
$E = 2 \sin (8 π x 10^{14} t - \frac{8 π}{3} x 10^{6} z) v / m$
Then average intensity of the wave is