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.

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

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.

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 $\frac{W}{m^{2}}$ and average energy density is $6 μ J / m^{3}$ , find the refractive index of the medium.

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$u = 6 \times 10^{- 6} J / m^{3} a n d I = 1200 W / m^{2}$

$∴$ Speed of the wave in the medium $v = \frac{I}{u} = 1200 / 6 \times 10^{- 6} \frac{m}{s}$

$\Rightarrow v = 2 \times 10^{8} m / s$

$∴$ Refractive index, $μ = \frac{C}{v} = \frac{3 \times 10^{8}}{2 \times 10^{8}} = 1.5$

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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.