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CBSE Class 10 Answered

what are the characteristics of refractive index?
Asked by | 09 Jun, 2008, 10:49: PM
Expert Answer

The refractive index (or index of refraction) of a medium is a measure for how much the speed of light (or other waves such as sound waves) is reduced inside the medium. For example, typical glass has a refractive index of 1.5, which means that light travels at 1 / 1.5 = 0.67 times the speed in air or vacuum

Definition: The refractive index n of a medium is defined as the ratio of the  velocity c of a wave phenomenon such as light or sound in a reference medium to the phase velocity vp in the medium itself:

Answered by | 09 Jun, 2008, 11:26: PM
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