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An electromagnetic wave is propagating in a medium. If intensity of wave is 1200 $\frac{W}{m^{2}}$ and average energy density is $6 μ J / m^{3}$ , find the refractive index of the medium.

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detailed solution

Correct option is C

u=6×10−6J/m3 and I=1200 W/m2∴ Speed of the wave in the medium v=Iu=1200/6×10−6 ms⇒v=2×108 m/s∴ Refractive index, μ=Cv=3×1082×108=1.5

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An electromagnetic wave is propagating in a medium. If intensity of wave is 1200 Wm2 and average energy density is 6 μJ/m3, find the refractive index of the medium.

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An electromagnetic wave is propagating in a medium. If intensity of wave is 1200 $\frac{W}{m^{2}}$ and average energy density is $6 μ J / m^{3}$ , find the refractive index of the medium.