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Question

Two immiscible transparent liquids of refractive indices 1.5 and 43 are arranged as shown in figure. The apparent depth of mark at the bottom from top surface is

156290_33d2256a6b9445aaab2f30ec26829444.png

A
10cm
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B
7cm
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C
433cm
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D
12cm
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Solution

The correct option is B 7cm
shift observed due to them is t1(11μ1)+t2(11μ2)
6(123)+4(134)=3

observed depth is 103=7

option B is correct

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