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The speed of electromagnetic waves in a material medium is given by (Symbols have their usual meanings) |
$v = (μ\, ε)^{0.5}$ $ν = (μ_0ε_0)^{-0.5}$ $v = (μ\, ε)^{-0.5}$ $ν = (μ_0ε_0)^{0.5}$ |
$v = (μ\, ε)^{-0.5}$ |
The correct answer is Option (3) → $v = (μ\, ε)^{-0.5}$ The speed of electromagnetic waves in a material medium is given by $v = \frac{1}{\sqrt{\mu \varepsilon}}$ where $\mu$ = permeability of the medium, $\varepsilon$ = permittivity of the medium. |
