Light travels fastest in

Kerosene

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Turpentine

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Water

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All

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Solution

The correct option is C Water
Speed of light in a medium of refractive index $n$ is given by-

$v = \frac{c}{n}$

Hence, for more $v$ , $n$ should be less.

Among the given media. refractive index of water is the least.
Hence, light travels fastest in water.

Answer-(C)

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