What is refractive index???

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Posted by Diljani . 7 years, 2 months ago
- 2 answers
G K 7 years, 2 months ago
the ratio: of the speed of radiation (such as light) in one medium (such as air, glass, or a vacuum) to that in another medium..... :-)
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G K 7 years, 2 months ago
0Thank You