The focal length of an eqniconvex lens is equal to the radius of curvature of either face. What is the value of refractive index of the material same of the lens?

The focal length of an equiconvex lens is equal to radius of curvature of either surface. What is the refractive index of the material of the prism ?

The focal length of an equi-convex lens is greater than the radius of curvature of any of the surfaces. Then, the refractive index of the material of the lens is

A biconvex lens has a focal length half the radius of curvature of either surface. What is the refractive index of lens material ?

The focal length of a double convex lens is equal to radius of curvature of either surface. The refractive index of its material is

The focal length of a plano-convex lens is equal to its radius of curvature. The value of the refractive index of its material is

The focal length of a plano convex lens is equal to its radius of curvature. The value of the refractive index of its material is

Focal length of the plano-convex lens is when its radius of curvature of the surface is R and n is the refractive index of the lens.

The focal length of an equi-concave lens is 3/4 times of radius of curvature of its surfaces. Find the refractive index of the material of lens. Under what condition will this lens behave as a converging lens?

The focal length of an equiconcave lens is 3/4 times of radius of curvature of its surfaces. find the refractive index of the material of lens. under what condition will this lens behave as a converging lens?