Mohan obtained a sharp inverted image of a distant tree on the screen placed behind the lens. He then moved the screen and tried to look through the lens in the direction of the object. He would see: 

• a blurred image on the wall of the laboratory. 

• an erect image of the tree on the lens.

• no image as the screen has been removed 

• an inverted image of the tree at the focus of the lens.