A convex lens of focal length `f` produces a virtual image `n` times the size of the object. Then the distance of the object from the lens is

A concave mirror of focal length f produces a real image n times the size of the object. The distance of the object from the mirror is

A concave mirror of focal length f produces a real image n times the size of the object. What is the distance of the object from the mirror?

A convex lens of focal length f produces a real image 3 times as that of size of the object, the distance between the object and the lens is

A convex lens of focal length f forms an image which is 13/ times the size of the object. Then, the distance of object from the lends is

A concave lens of focal length f forms an image which is n times the size of the object What is the distance of the object from the lens in terms of f and n?

A convex lens produces a real image m times the size of the object. What will be the distance of the object from the lens ?