The apparent thickness of a thick plano convex lens is measured once with the plane face upward and then with the convex face upward. The value will be
A
more in the first case
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B
same in the two cases
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C
more in the second case
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D
any of the above depending on the value of its actual thickness.
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Solution
The correct option is C more in the second case 1V1−μ−R=1−μ∞V1=−Rμ 1V2−μ−R=1−μ−R1V2+μR=μ−1RV2=−RV2>V1