Question

loudness of a sound is directly proportionate to the square of amplitude. please give an example

Answer 1

The larger  amplitude of a wave forms louder  sound and the lower amplitude of the wave forms softer.

we can explain it through an example

when you are in a room and want to thank her for his help to someone who is sitting on your bench you can say thanks in lower volume as compared to a person who is two benches away from you.you will have to speak louder to say thanks who is two benches away from you because wave will have to travel more in this case hence the amplitude will be lower.