Question

The radius of curvature of a Plano convex lens is R. The refractive index of material of prism is "n" then find the focal length of the lens

Answer 1

Answer:

lens maker formula

1/f=(n-1)(1/R¹-1/R²)

R¹=infinity(for plano convex lens )

R²=-R(for convex lens)

1/f=(n-1)(0+1/R)

1/f=(n-1)/R

f=R/(n-1)