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The absolute refractive index of water i...

The absolute refractive index of water is 1.36. What is the velocity of light in water ? (Velocity of light in vacuum `=3xx10^(8)` m/s)

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The correct Answer is:
The velocity of light in water is `2.21 xx 10^(8) m//s`
Absolute refractive index of water (n) =1.36, Velocity of light in vacuum
`(v_(1))=3xx10^(8) m//s`
To find : Velocity of light in water `(v_(2))`
Formula `n=(v_(1))/(v_(2))`
Calculation : From formula, `v_(2)=(v_(1))/(n)=(3xx10^(8))/(1.36)=2.21xx10^(8) m//s`
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