Question

differentiate between the following(3 points in each):-(1)loudness and pitch(2)music and noise(3)audible sound and inaudible sound (4)open circuit and closed circuit(5)primary cells and secondary cells (6)permanent magnet and electromagnet

Answer 1

Loudness is a measure of response of our ear to sound. The unit of loudness is decibel. It depends on amplitude. If the amplitude is high, the loudness also will be high.