A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed througth one face is 6 cm and when viewed through the opposite face is 4 cm. Then the refractive index of the material of the cube is :
2
2.5
1.6
1.5
A
1.5
B
2
C
1.6
D
2.5
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Solution
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Let the real depth of the object from one side be x
Then, μ=x6=15−x4
Solving for x, gives us,
2x=45−3x
which gives, x=9
Thus, now we can find the value of μ to be =96=1.5
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