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A glass slab of thickness 3 cm and refractive index 3/2 is placed on ink mark on a piece of paper. For a person looking at the mark at a distance 2 cm above it, the distance of the mark will appear to be

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4.5 cm

3 cm

4 cm

5 cm

answer is B.

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Detailed Solution

$x = t (1 - \frac{1}{μ})$

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