A biconvex lens `(mu=1.5)` has radius of curvature `20cm` (both).
find its focal length.

For a plane convex lens (mu = 1.5) has radius of curvature 10 cm. It is slivered on its plane surface. Find focal length after silvering:

A biconvex lens has radius of curvature 20 cm each. If the refractive index of the material of the lens is 1.5, what is its focal length?

A plano-convex lens has refractive index 1.6 and radius of curvature 60 cm. What is the focal length of the lens?

A plano-convex lens has refractive index 1.6 and radius of curvature 60 cm. What is the focal length of the lens?

Find the refractive index of the material of a plano-convex lens, if the radius of curvature of the convex surface is 20 cm and focal length of the lens is 60 cm?