A screen is placed at a distance 40cm away from an illuminated object. A converging lens is placed between the source and the screen and it is attempted to form the image of the source on the screen. IF no position could be found, the focal length of the lens

A screen is placed at a distance 40cm away from an illuminated object.

1.	A screen is placed at a distance 40cm away from an illuminated object. A converging lens is placed between the source and the screen and it is attempted to form the image of the source on the screen. IF no position could be found, the focal length of the lens
Answer» MUST be LESS than 10cm must be GREATER than 20cm must not be greater than 20cm must not be less than 10cm Answer :D