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A glass slab of thickness 3cm and refrac...

A glass slab of thickness `3cm` 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 `5.0 cm` above it, the distance of the mark will appear to be

A

3.0 cm

B

4.0 cm

C

4.5 cm

D

5.0 cm

Text Solution

Verified by Experts

The correct Answer is:
B
`d_("app") = (3)/(3//2) ` = 2 cm
Person views mark from distance = 2 + 2 = 4 cm.
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