An equiconvex thin spherical lens `mu=1.5` of radius of curvature `40cm` is silvered on one face. The focal length of this system is

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

In the figure, light is incident on a thin lens as shown. The radius of curvature for both the surfaces is R. Determine the focal length of this system.

The radius of curvature of a plane mirror of focal length 40 cm is :

The convex surface of a plano-convex lens is silvered and the radius of curvature of this surface is R. Find the focal length of the system:

The radius of curvature of a convex mirror is 40 cm. Find its focal length.

In figure , L is half part of an equiconvex glass lens (mu=1.5) whose surfaces have radius of curvature R =40cm and its right surface is silvered . Normal to its principal axis a plane mirror M is placed on right of the lens . Distance between lens L and mirror M is b. A small object O is placed on left of the lens such that there is no parallax between final images formed by the lens and mirror. If transverse length of final image formed by lens is twice that of image formed by the mirror , calculate distance'a' in cm between lens and object.

An equiconvex lens of glass (mu_(g) = 1.5) of focal length 10 cm is silvered on one side. It will behave like a

The radius of curvature of a spherical mirror is 20 cm. 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?