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Ray Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsRay Optics1 Mark
Question
A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through 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 (a) 2.0(b) 2.5 (c) 1.6(d) 1.5
       
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Answer

(d) 1.5

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