The refractive index of glass with respect to air is 4/3.The refractive index glass with respect to water will be:
(a) 1.525 (b) 1.225 (c) 1.425 (d) 1.125
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Refractive index of glass w.r.t. water
= refractive index of glass / refractive index of water
= (3/2) / (4/3)
= 9 / 8
= 1.125
OR
Refractive index of glass w.r.t. water
= speed of light in water / speed of light in glass
= 2.25 x 10⁸ / 2 x 10⁸
= 1.125
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