Question

Decibel is the unit of the pitch of a sound.
(A) True
(B) False

Answer 1

Hint Sound is a form of energy and sound intensity is a measurement we take from what we hear, Sound loudness is not necessarily the sound that goes in the human ear, but it also conveys human ear sensitivity sensing the energy.

Complete Step-by-step answer
The loudness of sound is generally measured in decibels. The short form of the decibel is written as $dB$ . One decibel is $10$ times the power ratio of the common logarithm. $1dB$ sound is very difficult to hear. No one can hear it if another sound is present in the background. It can only be heard with help of a sine wave.
While the pitch of a sound is defined as how shrill a sound is. It is characterized by the frequency of a sound. Thus, its unit is Hertz $(Hz)$. We can hear only those sounds which have a frequency from $20Hz$ to $20kHz$ . Our ear is not sensitive to frequencies higher or lower than the given range of frequencies. The higher the frequency of a sound, the shriller is the sound and the higher is the pitch. For example, the female voice has a higher pitch than the male voice.

Hence, the correct answer is an option (B) False.

Additional Information
Sound loudness also depends on various variables such as pitch, sound emission size, ear response, etc. The intensity of decibel may not stay the same on water and air. Decibel is not measured on a regular linear scale like other units. It is based on the order of magnitudes. Decibel is mostly used in electronics.

Note Many people get confused because decibel may be used to describe the power or intensity of other things also. Decibel is not like the common unit. It is a unit based on common logarithms. It is a way of relating a ratio on a scale. That ratio could be power or loudness of sound also.