What is vacuum? Explain why sound cannot travel through vacuum?

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Answer 1

Sound is a mechanical wave, so to propagate it material medium is required. Vacuum is defined as the empty space in which there are no matter particles present. Sound cannot travel through vacuum as there is no particles present for vibrations to take place.

Answer 2

Sound is a mechanical wave, so to propagate it material medium is required. Vacuum is defined as the empty space in which there are no matter particles present. Sound cannot travel through vacuum as there is no particles present for vibrations to take place.

What is vacuum? Explain why sound cannot travel through vacuum?

Sound is a mechanical wave, so to propagate it material medium is required. Vacuum is defined as the empty space in which there are no matter particles present. Sound cannot travel through vacuum as there is no particles present for vibrations to take place.

Explain why a ringing bell suspended in a vacuum chamber cannot be heard outside.

Bell jar experiment showing sound can travel in vacuum.

Explain how sound is produced by your school bell.

Which of the following pictures correctly show the way sound vibrations travel?

In the bell jar experiment, after starting the vacuum pump the sound gradually become fainter and finally we hear a feeble sound. Why?

Revise with Concepts

Sound Needs Medium