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

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.

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

A plano-convex lens (f = 20 cm) is silvered at plane surface. Now focal length will be

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 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:

A plano-convex lens is made of a material of refrative index mu=1.5 .The radius of curvature of curved surface of the lens is 20 cm.If its plane surface is silvered,the focal length of the silvered lens will be

A plano-convex lens (mu = 1.5) has a curved surface of radiys 15 cm. what is its focal length ?

The concave and convex surface of a thin concavo-convex lens of refractive index 1.5 has radius of curvature 50 cm and 10 cm respectively. The concave side is slivered then if the equivalent focal length of the silvered lends is -5x cm then find x.