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Sound

Question

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The sound from an insect is produced when it vibrates its wings at an average rate of 500 vibrations per second :

(a) What is the time period of the vibrations?

(b) What is the frequency of the vibrations in hertz?

(c) Can we hear this sound? Why or why not?

Solution

Given, rate of vibrations = 500

(a) Therefore, time period of vibrations=

\frac{1}{500}

0.0025

(b) The frequency of vibrations = 500 hertz.

(c) Yes, because its frequency is within the hearing range of humans.

Some More Questions From Sound Chapter

Time taken by an object to complete one oscillation is called __________.

Loudness is determined by the __________ of vibration.

The unit of frequency is ________.

Unwanted sound is called _________.

Shrillness of a sound is determined by the _________ of vibration.

Identify the part which vibrates to produce sound in the following instrument:

Dholak

Identify the part which vibrates to produce sound in the following instrument:

Sitar

Identify the part which vibrates to produce sound in the following instrument:

Flute

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