What is an ultrasonic sound?

एका वाक्यात उत्तर

A sound with a frequency greater than 20000 Hz is called an ultrasonic sound.

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पाठ 6: Sound - Exercises [पृष्ठ ७०]

पाठ 6 Sound
Exercises | Q V. 4. | पृष्ठ ७०

Name the subjective property of sound related to its frequency.

How is it possible to detect the filling of a bottle under a water tap by hearing the sound at a distance?

Name the characteristic which enables one to distinguish the sound of two musical instruments even if they are of the same pitch and same loudness.

Find the odd one out.

If the thickness of a vibrating string is increased, its pitch _____.

Define pitch.
Two wires AB and CD of same length are stretched by same amount. Which wire will produce a sound of greater pitch on plucking?
Give a reason for your answer.

The Pitch of sound is determined by its ______.

The pitch is the characteristic of sound that enables us to distinguish between a flat sound and a shrill sound.

The voice of a female has a lower pitch than a male.

Find the odd one out.