Question

Ravi wants to make a lens which formula has to follow write the formula and explain it terms​

Answer 1

f is the focal point

n is the refractive index

R1 is the radius of first curvature

R2 is the radius of second curvature

Answer 2

In order to make a lens, Ravi has to follow lens maker's formula.

Lens Maker's Formula:

              $\frac{1}{f}=(n-1)(\frac{1}{R_{1}}-\frac{1}{R_{2}})$

               f = focal length of the lens

               n = absolute refractive index of the material of the lens

               $R_{1}=$ Radius of curvature of the first refracting surface

               $R_{2}=$ Radius of curvature of the second refracting surface