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; calculates the refractive index of the material of the block.

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A. 2/5
B. 3/5
C. 3/2
D. 5/3
E. 5/2

Correct Answer:

Option D – 5/3

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