What are real and virtual images ? How will you find out whether an image is real or virtual ? Can a virtual image be obtained on a screen ?

Explanation

i. The image in front of the mirror which can be obtained on a screen is called a real image.
ii. The image which is behind the mirror and thus cannot be obtained on a screen is called a virtual image.
iii. A virtual image cannot be obtained on a screen , whereas, a real image can be observed on screen. In this way, one can find out whether the image formed is real or virtual by observing the screen.