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Question

A layer of benzene (μ=1.5) having thickness 12 cm floats in a vessel on water layer (μ=4/3) having thickness 8 cm. When viewed from top obliquely, the apparent depth of the bottom of the vessel below the surface of benzene will be

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Solution


For the multiple media of different refractive index,
Apparent depth,
dapp=t1μ1+t2μ2
dapp=121.5+84/3=14 cm
Thus, the bottom of the vessel will appear at a depth of 14 cm.
Why this question?
It tests your understanding of apparent depth, when more than one media is present.

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