What Causes Sound?

What causes sound?

One Line Answer

Sound is caused due to vibrations of a body.

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Chapter 8: Propagation of Sound Waves - Exercise 8 (A) [Page 182]

Chapter 8 Propagation of Sound Waves
Exercise 8 (A) | Q 1 | Page 182

Chapter 7 Sound
Exercise | Q 2 | Page 286

Write true or false for a given statement.

Waveforms of two different stringed instruments can be the same.

What is a longitudinal wave ?

Draw a graph between displacement from mean position and time for a body executing free vibrations in vacuum.

What do you mean by the term frequency of a wave? State its S.I. unit.

The separation between two consecutive crests in a transverse wave is 100 m. If wave velocity is 20 m s^-1, find the frequency of wave.

For which range of frequencies, human ears are most sensitive?

Select the correct option:

In the region of compression or rarefaction, in a longitudinal wave, the physical quantity which does not change is:

Select the correct option:

Which of the following is an elastic wave?

What is approximate value of the speed of sound in iron as compared to that in air? Illustrate your answer with a simple experiment.