If the refreactive index of water with respect to air ({ }_a \mu_w) is {5}\/{3} . Calculate the refractive index of air with respect to water (_w \mu_a)

ICSE Class 10 Physics 2019 Solved Paper - Question 13

Question : 13 of 74

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If the refreactive index of water with respect to air

({ }_a µ_w)

\;{5}\/{3}

. Calculate the refractive index of air with respect to water

(_w µ_a)

Solution:

Given that:

{ }_{ {\a}} µ_{ {\w}}=\;{5}/{3}

\; ∵ \;\; _w µ_{ {\a}}=\;{1}/{{ }_{ {\a}} µ_{ {\w}}}

\; ∴ \;\; \;\; \;\; \;\; µ_a=\;{1}/{5 \/ 3}=\;{3}/{5}

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