why

[meenakshi]

Light is faster than sound, why in TV's sound is coming first

[Flurfl]

Sound travels from your television to you as waves in air at about 330m/s. Light (and all electromagentic radiation) travels at about 300,000,000 m/s.

The problem will be with the electronics.Your television receives the signal from the transmitter at the speed of light but if there is a problem processing the signal on either end of that transmission  (at the TV studio or your television) then the sound and vision can become out of synchronisation.

[Thunderchild]

true sound is not transmitted to you television as sound so the same rule as light apply as light is an electromaggnetic wave as well it is a technical problem also consider that the picture is much more complex than the sound so will start to come out first if that is what you r refering to !