Question

1) what is unit of frequency?
2) what is unit of sound?
3) high pitched sound are known as?
4) low pitched sound are known as?
5) what determines shrillness of sound?
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Answer 1

Ans1- The number of periods or cycles per second is called frequency. The SI unit for frequency is the hertz (Hz).

Ans2- A sound unit is any acoustic unit of sound measurement. dB, decibel - noise of sound measurement is called decibels. Ratio of the sound pressure to reference pressure to something.

Ans3- A high pitched sound is also called a shrill sound.

Ans4- Pitch is a perceptual property of sound that allows their ordering on a frequency related scale. ... A low pitched sound is also called a hoarse sound.

Ans5- Shrillness of the sound produced by a body is determined by the frequency of the vibrating body.

Hope it will help you...☝️