An equiconvex lens has a power of 5 dioptre. If it is made of glass of refractive index 1.5. then radius of curvature of its each surface will be ?

A plano convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is

A plano convex lens is made of glass of refractive index 1.5. The radius of curvature of its convex surface is R. Its focal length is

A double convex lens of f = 6 cm is made of glass of refractive index 1.5. The radius of curvature of the surface which is double that of other surface will be

A plane convex lens has a focal length 12cm and is made up of glass with refractive index 1.5. Find the radius of curvature of its curved side.

A plane convex lens has a focal length 12cm and is made up of glass with refractive index 1.5. Find the radius of curvature of its curved side.

A double convex lens of focal length 6 cm is made of glass of refractive index 1.5. The radius of curvature of one surface is double that of the other surface. The value of smaller radius of curvature is

A plano-convex lens is made of glass of refractive index 1.6. the radius of curvature of its curved surface is 30 cm. What is the focal length of the lens ?