Class X Sciences [papers from previous years] Light enters from air – InterviewSolution

1.	Class X Sciences [papers from previous years] Light enters from air into a glass plate which has a refractive index of 1.50. Calculate the speed of light in glass. The speed of light in air is ms-1.
Answer» ive index of a TRANSPARENT medium is defined as the RATIO of the SPEED of light in vacuum to the speed of light in the medium. 1.50 = speed of light in vacuum / speed of light in glass Speed of light in glass = 3 * 10^8 m/sec / 1.50 = 2 * 10^8 m/sec

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