A concave lens of focal length `(1)/(3)m` forms a real, inverted image twice in size of the object. The distance of the object from the lens is

A convex lens of focal length 16 cm forms a real image double the size of the object. The image distance of the object from the lens is

A convex lens of focal length 16 cm forms a real image double the size of the object. The distance of the object from the lens 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 of focal length 16 cm forms a virtual image of double the size of the object. What is the distance of the object from the lens ?

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 lens of focal length f produces an image (1//n) times the size of the object. The distance of the object from the lens is :

A convex lens of focal length f forms an image which is 1/3 times the size of the object. Then, the distance of object from 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 convex lens of focal length f forms an image which is 1/3 times the size of the object. Then, the distance of object from the lends is