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A plane electro magnetic wave is propagating in vacuum such that average energy density at a point is $5 μ J / m^{3}$ . Then intensity of the wave is

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4 KW/m2

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10 KW/m2

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detailed solution

Correct option is B

I=u.C=5×10−6×3×108 walt/m2=1.5 KW/m2

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A plane electro magnetic wave is propagating in vacuum such that average energy density at a point is 5 μJ/m3. Then intensity of the wave is

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A plane electro magnetic wave is propagating in vacuum such that average energy density at a point is $5 μ J / m^{3}$ . Then intensity of the wave is