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A ray of light travelling in a medium of refractive index 1.8 enters into a medium with refractive index 1.5. Then the speed of light in the rarer medium will (1)Increase by a factor of 1.5 (2)Decrease (3)Remain same (4)Increase by a factor of 1.2 |
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Answer» A ray of light travelling in a medium of refractive index 1.8 enters into a medium with refractive index 1.5. Then the speed of light in the rarer medium will (1)Increase by a factor of 1.5 (2)Decrease (3)Remain same (4)Increase by a factor of 1.2 |
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