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What will be the speed of light in water...

What will be the speed of light in water if it is given that the refractive index of water is 4/3 and the speed of light in air is ` 3 xx 10^(8)` m/s?

Text Solution

Verified by Experts

`._2n_(1) = v_(1)/u_(2) therefore v_(1) = v_(1)/(._(2)n_(1))`
` v_(2) = ( 3xx 10^(8) m//s)/(4//3) = ( 9 xx 10^(8)` m/s
The speed of light in water = `2.25 xx 10^(8)` m/s .
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Calculate speed of light in water of refractive index 4//3 . Given speed of light in air = 3 xx 10^(8) m//s .

The refractive index of water is 4 //3 and the speed of light in air is 3 xx 10^(8) m//s .Find the speed of light in water.

Knowledge Check

  • The refractive index of water is 4//3. The speed of light in water is

    A
    `1.50xx10^8 m//s`
    B
    `1.78xx10^8 m//s`
    C
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    D
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  • The refractive index of water is 1.33. What will be the speed of light in water

    A
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    B
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    C
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    D
    `1.33xx10^(8) m//s`

  • If the refractive index of diamond is 2.4 find the velocity of light in diamond.(c= 3xx10^(8) m/s)

    A
    `1.25xx10^(8)`m/s
    B
    `2.25xx10^(8)` m/s
    C
    `1.5xx10^(8)` m/s
    D
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