Question

Refractive index of glass is 3/2.The glass slab when viewed from vertically above its really thickness appears to be:
3/2
2/3
6
none of these
Please give answer with full explanation​

Answer 1

Correct answer: (b)

Solution: The apparent depth of ink mark =realdepthμ=33/2=2cm Thus person views mark at a distance =2+2=4cm.