If the plane surface of a plano-convex lens of radius of curvature R and refractive index `mu` is silvered, then its focal length would be

A plano convex lens of radius of curvature 30 cm and refractive index 1.5 is kept in air. Find its focal length (in cm).

The radius of curvature of curved surface of a thin plano-convex lens is 10 cm and the refractive index is 1.5 . If the plano surface is silvered, then the 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 radius of curvature of the convex face of a plano convex lens is 12cm and the refractive index of the material of the lends 1.5. Then, the focal length of the lens is

The plane surface of a plano-convex lens of focal length f is silvered. It will behave as

An object O is kept in air in front of a thin plano-convex lens of radius of curvature 10 cm. Its refractive index at 3//2 and the medium towards right of the plane surface is water of refractive index 4//3. What should be distance x of the object so that the rays becomes parallel finally?

The redius of curvature of the convex face of a plano-convex lens is 12cm and its refractive index is 1.5. a. Find the focal length of this lens. The plane surface of the lens is now silvered. b. At what distance form the lans will parallel rays incident on the convex face converge? c. Sketch the ray diagram to locate the image, when a point object is places on the axis 20cm from the lens. d. Calculate the image distance when the object is placed as in (c).

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?

What is the refractive index of material of a plano-convex lens , if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ?

A plano convex lens has focal length f = 20 cm . If its plane surface is silvered, then new focal length will be