A convex lens of focal length 8 cm forms a real image of the same size as the object. The distance between object and its image will be:

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 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 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 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 16 cm forms a virtual image of double the size of the object. What is the distance of the object from the lens ?

A concave lens of focal length 20 cm product an image half in size of the real object. The distance of the real object is

A concave lens of focal length 20 cm product an image half in size of the real object. The distance of the real object is

A convex lens of focal length 20 cm forms a virtual image of size twice the size of the object. (i) How is the distance of image v related to the distance of object ? (ii) What is the power of lens?