Question

Name and define the characteristic which enables one to distinguish two sounds of the same loudness, but of different frequencies, given by the same instrument.

Answer 1

Recall the properties related with the sound wave. Check which properties of the sounds are different for the sounds from the same instrument.

Complete step by step answer:
The characteristic which enables one to distinguish two sounds of the same loudness, but of different frequencies, given by the same instrument is pitch of the sound.
The two different sounds have two different frequencies.
The pitch of the sound is defined as the characteristic of the sound which can distinguish between the two sounds of the different frequency from the same instrument by differentiating between the acute
note and the grave or flat note.
The pitch of the sound depends on the frequency of the sound wave.
The high frequency sound wave has high pitch and the low frequency sound wave has the low pitch.
Hence, the pitch of the two different sounds is also different.
One can determine the pitch of the sound only for the sounds with clear and distinct frequency.
The pitch of the two sounds from the same instrument may be different if they have different frequencies.
For example, suppose someone is playing a guitar. The thinner thread of the guitar will oscillate faster and produce a high pitch sound while the thicker thread of the guitar will oscillate slowly and produce a low pitch sound. Hence, the different sounds are produced from the guitar by tuning different threads on the guitar.

Note:
The pitch of the sound does not depend on the amplitude of the sound wave or the velocity of the sound wave.
The high frequency sound wave has high pitch and the low frequency sound wave has the low pitch.