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

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Correct Option
d

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Discussions (18)

Doctordanny
4 years ago

n=real depth/apparent depth
real depth = 5
apparent depth = 3
Therefore, n=5/3.✅

Evans lds
12 years ago

I fear.......o

machays
2 years ago

It should be 5/3

TennyB
2 years ago

8

Overwatch886
2 years ago

It is meant to be
Refractive index= real depth ÷ apparent depth
That is 5/3

Toluwa001
2 years ago

Wrong answer

GraceTutor
3 years ago

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.

GraceTutor
3 years ago

refractive index= thickness/thickness-displacement
refractive index=5/5-3
5/2

Chimemeria
9 years ago

it's 3/5 not 5/3 pls

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