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What do you understand by reractive …

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What do you understand by reractive index

Posted by Ayush Negi 6 years, 3 months ago

CBSE > Class 10 > Science

2 answers

Ayush Negi 6 years, 3 months ago

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Yogita Ingle 6 years, 3 months ago

A ray of light changes its direction when it enters from one medium to another medium. This happens because speed of light is different in different media. For example; the speed of light is 3 x 10⁸ m/s (2.99x10⁸ m/s) in vacuum and it is 2.98 x 10⁸ m/s in air.

Refractive Index is the extent of change of direction of light in a given pair of media. The refractive index is a relative value of speed of light in the given pair of media. Thus, to calculate the refractive Index the speed of light in two media is taken.

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