Sound does not travel through ______.
Air
Vacuum
Water
Solids
What is a vacuum? Explain why sound cannot travel through a vacuum.
(a) State two methods of producing sound.
(b) How does sound from a sound producing body travel through air to reach our ears ?
The correct statement is :
(a) Sound and light both require medium for propagation
(b) Sound can travel in vacuum, but light can not
(c) Sound needs medium, but light does not need medium for its propagation
(d) Sound and light both can travel in vacuum.