An object is at a distance of 20 m form a convex lens of focal length 0.3m The lens forms an image of the object moves away form the lens at a speed of `5m//s` the speed and direction of the image will be :

An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm . The image is formed on the other side of the lens at a distance

An object is kept at 0.2 m from a convex lens of focal length 0.15 m. Find the position of the image formed.

An object is placed at 0.06 m from a convex lens of focal length 0.1 m. Calculate the position of the image?

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

An object is placed at a distance of 12 cm from a convex lens on its principal axis and a virtual image of certain size is formed. If the object is moved 8 cm away from the lens, a real image of the same size as that of the virtual image is formed. The focal length of the lens in cm is

A convex lens has a focal length of 20 cm. It is used to form an image of an object placed 15 cm from lens. The image is