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.
- 2/5
- 3/5
- 3/2
-
5/3
- 5/2
The correct answer is: D
Explanation
refractive index = real depth ÷ apparent depth
→ 5 ÷ 3
n = 5/3