Question

Sound cannot pass through?
1. Water
2. Steel
3. Air
4. Vacuum

Answer 1

Correct Answer - Option 4 : Vacuum

The correct answer is Vacuum.

• Sound cannot pass through Vacuum.
• Sound waves are travelling vibrations of particles in media such as air, water, or metal.
• A vacuum is a space that does not contain any matter.
• So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate to work in.

• Sound waves are mechanical waves.
• Mechanical waves need a medium to travel.

Based on the orientation of particle motion and direction of energy, there are three categories:

1. Mechanical waves.
2. Electromagnetic waves.
3. Matter waves.