Question

The velocity of sound in vacuum is
A. 332 m/s
B. 228 m/s
C. 330 m/s
D. zero

Answer 1

Hint: To solve this question, we must know what medium is the given wave travelling In. A vacuum is a space in which there is no matter or it can also be defined as a space in which the pressure is so low that any particles in the space do not affect any kind of processes being carried on there.

Complete step-by-step answer:
The sound waves travel in a medium when there are particles for the propagation of these sound waves. Since the vacuum is an empty space, there is no propagation of sound waves.Sound waves are mechanical waves. Mechanical waves need medium and elasticity to propagate in the medium. The speed of sound in a vacuum is zero meters per second, as there are no particles present in the vacuum. Therefore the vacuum speed of sound waves in vacuum will be zero.
So the correct answer is option D.

Note: In physics and mathematics and other related fields, a wave is a propagating dynamic disturbance of one or more quantities.A mechanical wave is a wave that is an oscillation of matter and therefore transfers energy through a medium. While waves can move over long distances, the movement of the medium of transmission the material is however limited. For example: sound waves. Non-mechanical waves are waves that do not require a medium for their propagation or the transfer of their energy to occur. Electromagnetic waves are the only type of non-mechanical waves in nature. They can very well travel through the vacuum of space.