The velocity of light in glass is 2 xx 1...

The velocity of light in glass is `2 xx 10^(8)` m/s. If refractive index of glass with respect to water is 9/8, then the velocity of light in water is

`1.6 xx 10^(8)`m/s

`1.33 xx 10^(8)` m/s

`3 xx 10^(8)` m/s

`2.55 xx 10^(8)` m/s

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