A transparent rectangular block 5.0cm thick is placed on a black dot. The dot when viewed from above is seem 3.0cm from the top of the block calculate the refractive index of the material of the block.
A
2/5
B
3/5
C
3/2
D
5/3
E
5/2
Verified Correct Answer: D.
Physical Principles & Numerical Solution
refractive index = real depth \div apparent depth
→ 5 \div 3
n = 5/3
Source: Myschool Past Questions Archive (Record #21238)