Note is a sound
(a) of mixture of several frequencies
(b) of mixture of two frequencies only
(c) of a single frequency
(d) Always unpleasant to listen
Answer: (a)
Solution:
Sound of a single frequency is called tone.
Sound of mixture of multiple frequencies is called note.
This mixture may have more than two frequencies.
Frequency of sound is also known as pitch.
Frequency depends on the structure of a sound producing device.
That is why, it is said that frequency depends on the source of the sound.
The correct answer of this question is A.