Refractive index of diamond with respect to glass is 1.6 and absolute refractive index of glass is 1.5. Find out the absolute refractive index of diamond.
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Let, refractive index of diamond with respect to air $=n_{D A}=$ absolute refractive index of diamond,refractive index of glass with respect to air $=n_{G A}=$ absolute refractive index of glass, refractive index of diamond with respect to glass $= n _{ DG }$
Given,
$N_{DG}=1.6 \text { and } n_{GA}=1.5$
$\Rightarrow n_{DA}=n_{DG} \times n_{GA}$
$\Rightarrow n_{DA}=1.6 \times 1.5=2.4$
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