Question

Give reasons for the following:
A large drum produces louder sound than a smaller drum.

Answer 1

Loudness depends upon area. Greater the area of the vibrating body, greater the loudness of sound. Hence, a larger drum, which has a greater vibrating area than a smaller drum produces a louder sound.

Complete step by step answer:
Loudness is the human perception of sound volume and primarily depends on sound intensity. Loudness of a sound is directly proportional to the area of a vibrating body. In other words, greater the area of the vibrating body, louder the sound. When we beat two drums, one larger and the other smaller, we will notice that the larger drum makes a louder sound than the smaller drum. This is because the larger drum has a greater vibrating area when compared to the smaller drum.
Additional information:
Loudness of a sound also depends on amplitude of the wave apart from the area of a vibrating body. Amplitude is the measure of variation in pressure along a wave. Loudness is directly proportional to amplitude. Greater the amplitude of the wave, greater the loudness and vice versa.Loudness of a sound is measured in decibels (dB). An increase of 10 dB on the decibel scale represents a ten times increase in intensity.

Note: We should not confuse pitch with loudness. Pitch is how high a low a sound is. Pitch depends upon the frequency of vibrations of the sound wave while loudness depends upon amplitude of the sound wave.