Name: Audible and Inaudible Sounds
Uploaded: 2019-07-19
Duration: 58 s
Description: We can't hear sounds of all frequencies. There is a certain range of frequencies that our ears can recognise. Let's understand audible and inaudible sounds i...

Question

Match the correct answer:

a. Amplitude	(i) shallow sound
b. Lion's roar	(ii) number of vibrations per second
c. Frequency	(iii) maximum displacement
d. Chirping of birds	(iv) shrill sound

Accepted Answer

a. Amplitude- (iii) maximum displacement

The amplitude of a sound wave is the maximum displacement from the mean position. It is the displacement from the mean position to the extreme position.

b. Lion's roar- (i) shallow sound

Lion's roar is a shallow sound. The shallow sound is a low pitch sound.

c. Frequency- (ii) number of vibrations per second

Frequency is the number of vibrations per second. It is the reciprocal of the time period, its unit is Hertz.

d. Chirping of birds- (iv) shrill sound

The chirping of birds is a shrill sound. The shrill sound is a high pitch sound.

a. Amplitude (iii) maximum displacement

b. Lion's roar (i) shallow sound

c. Frequency (ii) number of vibrations per second

d. Chirping of birds (iv) shrill sound

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