Question

n12Xn21, refractive index in simplest form is

Answer 1

Hey dear,

● Answer -
n12×n21 = 1

● Solution -
First you need to understand some basic concepts.

● Refractive index -
- Refractive index is the ratio of the velocity of light in a vacuum to its velocity in a specified medium.
- Refractive index of medium 1 wrt medium 2 is represented by n12.

That is ,
n12 = n1 / n2
n21 = n2 / n1

Therefore,
n12×n21 = (n1/n2) × (n2/n1)
n12×n21 = 1

Hope this helps you...