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Light enters from air to glass having re...

Light enters from air to glass having refractive index 1.50 what is speed of light in glass? Speed of light in vacuum is `3xx10^8` m `s^-1`.

Text Solution

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`n_(g) = c/(v_(g))`
`n_(g) = (3xx10^(8))/(v_(g)) `
`v_(g) = (3xx10^(8))/(1.5)`
`v_(g)= 2xx 10^(8)` m/s
C = velocity of light in air .
`v_(g)` = velocity of light in glass .
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