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What do you understand by reractive index |
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Answer» Thanks 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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