A transparent rectangular block 5.0cm thick is placed on ...
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
Correct answer is B
refractive index = real depth ÷ apparent depth
→ 3 ÷ 5
n = 3/5
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