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The refractive index of glass is 1.5.The...

The refractive index of glass is `1.5.`The speed of light in vacuum is `3 xx 10 ^(8) ms ^(-1).` Calculate the speed of light in glass.

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Given refractive index of glass , `n _(g) = 1. 5.`
Velocirt of light in vacuum, `c = 3 cc 10 ^(8) ms ^(-1).`
Velocity of light in glass, `v _(g) = ?`
Refractive index of glass with respect to air or vaccum is
`implies v _(g) = (c)/( n _(g)) = (3 xx 10 ^(8) ms ^(-1))/( 1. 5)`
`= v = 2 xx 10 ^(8) ms ^(-1)`
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