question_answer 40)

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) The sound which is produced due to a mixture of several frequencies is called a note and it is pleasant to listen too. An octave consists of eight different note, ranging from 256 Hz to 512 Hz.