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7. The velocity of light in a medium is 1.5 × 108 m/s. What is the refractive index of the medium with respect to air, if the velocity in the air is 3 × 108m/s?​

Answer»

Explanation:Let the Velocity of light in a MEDIUM = vTherefore, from the QuestionAlso, Let the velocity of light in air = cTherefore, from the QuestionNow, let the refractive INDEX = n We KNOW that, n = c/vTherefore, we will getHence, refractive index of medium = 2



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