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Question

The refractive index of diamond with respect to glass is 1.6 and absolute the refractive index of glass is 1.5. Find the absolute refractive index of diamond.


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Solution

Absolute refractive index of glass, ng=cvg
where, c = speed of light in air
vg = speed of light in glass
Absolute refractive index of diamond, nd=cvd

vd = speed of light in diamond

Refractive index of diamond with respect to glass is given by, ndg=ndng=1.6
nd=ndg×ng=1.6×1.5=2.4
Therefore, the absolute refractive index of diamond is 2.4.


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