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The refractive index of water with respect to air is 4/3. What is the refractive index of air with respect to water?

Refraction Plane Surfaces

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Answer

As it is given that,

aμw = 43\dfrac{4}{3}

And we know that —

wμa = 143\dfrac{1}{\dfrac{4}{3}}

wμa = 34\dfrac{3}{4}

wμa = 0.75

Hence, the refractive index of air with respect to water is 0.75

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