Question

define refractive index of a medium and express it mathematically

Answer 1

refractive index is the ratio of  speed of light in two media. refractive index of medium 1 with respect to medium 2 is   speed of light in medium 2 ÷ speed of light in medium 1.m2/m1

Answer 2

Explanation:

• The ratio of the speed of light in vacuum to the speed of light in the medium is called refractive index of a material.
• It signifies the measure of the speed of light when its changes the medium.
• Its formula is given by :

$n=\dfrac{c}{v}$

c is speed of light in vacuum

v is speed of light in medium

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Refractive index

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