In a medium, the speed of light wave decreases to times its speed in free space. The ratio of relative permittivity to the refractive index of the medium is . The value of is _____. (Given speed of light in free space and for the given medium )
NVAEasyJEE Main 2023 · 31 January, Shift 1Characteristics of EM Waves
Physics Question from JEE Main 2023 · 31 January, Shift 1
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