A lens forms a virtual, diminished image of an object placed at `2 m` from it. The size of image is half of the object. Which one of the following statements is correct regarding the nature and focal length of the lens ?

A convex lens forms a virtual image of an object placed ………… .

A lens forms an upright and diminished image of an object when the object is placed at the focal point of the given lens. Name the lens.

A convex lens forms a real image of the object when the lens is at a distance of 1 m from the object. The size of the image is 3 times that of the object. The position of the object and the screen are kept fixed but the distance of lens from the object is doubled. The image is now one half of the size of the object, the focal length of the lens is

A lens forms a virtual image 4 cm away from it when an object is placed 10 cm away from it. The lens is a ….. Lens of focal length ……………

A lens forms a virtual, erect and diminished image whatever be the position of the object. Which type of lens this ?