Question

Usually light travels faster than sound. However, when we switch a television set on the picture comes later than the sound. The reason
is that

Options

• in TV transmission sound is transmitted first and the picture is transmitted later

• there is always a delay in the picture tube getting switched on

• Emission of electrons from the picture tube takes time

• The wiring for the picture tube is much longer compared to that for the speaker

Answer 1

Emission of electrons from the picture tube takes time