Question

The loudness of sound depends upon
A. Its velocity
B. Its amplitude
C. Its pitch
D. Its frequency

Answer 1

Hint: To answer this question, we first need to understand what is sound. In physics, sound is a vibration that travels through a transmission medium such as a gas, liquid, or solid as an acoustic wave. Sound is the reception of such waves and the brain's perception of them in human physiology and psychology.


Complete step-by-step solution:
Amplitude - The amplitude of a sound wave is a measurement of the wave's height. The loudness of a sound wave can be described as the maximum displacement of vibrating particles of the medium from their mean position at the time the sound is produced. It is the distance between the wave's crest or trough and its mean location.
The amplitude and sound are directly proportional.
The loudness of a sound wave is determined by its amplitude.
A loud sound has a bigger amplitude, while a soft sound has a lesser amplitude.
If the amplitude is large, the sound will be louder, and if the amplitude is low, the sound will be weak.
The amplitude is related to the square of the loudness.
As the amplitude of the vibration increases, so does the volume of the sound. The decibel is a measurement of loudness.
So, we conclude that the loudness of sound depends upon its amplitude.
So, the final answer is option (B) i.e. its amplitude.

Note:A period can be defined as the amount of time it takes to complete a task. The term "periodic" refers to an event that occurs on a regular basis. The period is the amount of time it takes for a periodic event to repeat itself. The time it takes a particle to complete one vibration cycle is the particle's time period.