The speed of electromagnetic wave in a medium (whose dielectric constant is $2.25$ and relative permeability is $4$ ) is equal to

0.5 \times 10^{8} m / s

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0.25 \times 10^{8} m / s

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0.75 \times 10^{8} m / s

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1 \times 10^{8} m / s

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Solution

The correct option is D $1 \times 10^{8} m / s$
Given that $ϵ = 2.25$ and $μ = 4$

so speed of light in that medium will be $\frac{c}{\sqrt[2]{μ ϵ}} = c / 3$
Put $c = 3 \times 10^{8} m / s$ we get speed of light in that medium as $1 \times 10^{8} m / s$
Option D is correct.

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The speed of electromagnetic wave in a medium (whose dielectric constant is 2.25 and relative permeability is 4) is equal to

The correct option is D 1×108m/sGiven that ϵ=2.25 and μ=4 so speed of light in that medium will be c2√μϵ=c/3 Put c=3×108m/s we get speed of light in that medium as 1×108m/sOption D is correct.

The speed of electromagnetic wave in a medium (whose dielectric constant is $2.25$ and relative permeability is $4$ ) is equal to

The correct option is D $1 \times 10^{8} m / s$
Given that $ϵ = 2.25$ and $μ = 4$

so speed of light in that medium will be $\frac{c}{\sqrt[2]{μ ϵ}} = c / 3$
Put $c = 3 \times 10^{8} m / s$ we get speed of light in that medium as $1 \times 10^{8} m / s$
Option D is correct.