Question

find the focal length of Plano convex lens if its radius of curvature is R and refractive index is n​

Answer 1

Answer:

Explanation:

This is a basic equation used to calculate the focal length of a lens

given the radius of curvature of the lens and the refractive index of

the lens relative to the medium. It is only an approximation and works

best for thin lenses.

 

 

1/f = (n-1)(1/R1 - 1/R2) where n is the refractive index of the lens  

 

For a plano-convex lens R2 is flat. Therefore, 1/R2 is 1/infinity or zero.

 

The formula then becomes:

 

1/f = (n-1)(1/R1)

Answer 2

Explanation:

this is the answer

hope it helps u