Question

Refractive indices of glass and water are 3/2 and 4/3 respectively . The refractive index of glass with respect to water is a) 9/8 b)8/9 c) 2 d) none GIVE REASON

Answer 1

hey!!

here is ur answer!!

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in general,

The refractive index of second medium with respect to the First medium is related to the speed of light of the two media ..

that is :

1 mew 2 = speed of light in medium 1/
speed of light in medium 2

refractive index of glass with respect to water is :

given,

refractive index of glass = 3/2
refractive index of water = 4/3

water mew glass = (3/2) / (4/2)

=> 9/8 => 1.125



OR....


refractive index of glass with respect to water =
Speed of light in water / Speed of light in glass

=> 2.25 * 10^8 / 2.0 * 10^8

=> 1.125

[ speed of light in water = 2.25 * 10^8..
speed of light in glass =
2.0 * 10^8]

therefore..

the correct answer will be 9/8...

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hope this helps you!!