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MHT CET Physics question

PhysicsRay Optics and Optical InstrumentsMHT CET

The refractive index of the material of crystal is and that of oil is . When a ray of light passes from oil to glass, its velocity will change by a factor [MHTCET 2019]

Answer: (D)

Solution

Speed is inversely proportional to refractive index, so

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Question ID VK-069409