The ratio of speeds of electromagnetic waves in vacuum and a medi… | JEE Main 2026 Physics PYQ

MCQEasyJEE Main 2026 · 23 January, Shift 2Characteristics of EM Waves

The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant $k = 3$ and permeability of $\mu = 2\mu_0$ , is ( $\mu_0$ = permeability of vacuum)

A
$\sqrt{6}:1$
B
$6:1$
C
$36:1$
D
$3:2$

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