Question

How does a picture appear on the screen of a TV, mobile, laptop and a cinema theatre?

Answer 1

• A picture appears on the screen of a TV, mobile or laptop because electrical energy is converted into light energy by the screen. Different coloured light produced by tiny pixels forms the picture.
• In a cinema theatre, a projector uses electrical energy to produce light and projects the moving images onto a large screen. Thus, light energy enables us to see pictures on these screens.