Velocity of light travelling from rarer medium to denser medium decreases by 30%. Find the refractive index of the denser medium with-respect to rarer medium?

1.35

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1.5

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1.4

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1.428

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Solution

The correct option is C 1.428
We know that,
$μ = \frac{c}{v}$
$μ_{2}^{1} = 1.428$

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