What do you understand by the term infrasonic vibrations?

One Line Answer

Infrasonic vibrations: Those vibrations whose frequency is less than 20 hertz are known as infrasonic vibrations

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Chapter 9: Sound - Exercise (B) Subjective Questions

Chapter 9 Sound
Exercise (B) Subjective Questions | Q 3.1

Complete the following sentence:

Elephants produce ____________sound.

Name the sound of the frequency given below:

10 Hz

Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.

Explain how do bats locate the obstacles and prey in their way.

Sonar makes use of :

What do you understand by the term sonic vibrations? State the range of sonic vibrations for the human ear.

Name three animals which can hear ultrasonic vibrations.

How do bats locate their prey during a flight?

What are hearing aids?

The range of audible frequency for the human ear is