# How will you prove refractive inside of red is less than that of violet by formulas?

##### 1 Answer

May 6, 2017

#### Explanation:

This can be proved using Cauchy's equation which is stated above

From the equation we can see that refractive index decreases with increasing wavelength

Hence as wavelength of red is more than violet

Therefore refractive index of red is less than that of violet.