Question

Sound of siren and whistle are different as we perceive and can be easily differentiated, this

difference is mainly due to

a) Sounds of different amplitude and frequency

b) Sounds of different amplitude only

c) Sounds different frequency only

d) Difference if ear structure of humans​

Answer 1

Answer:

The correct answer is option c. This is known as doppler effect. The difference in wavelength makes us differentiate between the sound of siren and whistle.

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Answer 2

Different frequency only (option c)

• Our ear can perceive sounds from 20Hz upto 20,000 Hz. The lower frequency sounds are more dull , while the high frequency sounds are shrill.

• The cochlea of our ear can sense different sound frequency and differentiate them.

• Similarly, the sound of siren and whistle can be differentiated by our ear based on different parts of th cochlea getting stimulated by different frequencies.

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