Question

Q1. Take a long thread. Place your hands over your ears and get someone to place this thread round your head and hands. Ask her to make the thread taut and hold its ends in one hand. Now ask her to draw her finger and thumb tightly along the thread. Can you hear a rolling sound like that of a thunder? Now repeat the activity while another. Mend stands near both of you. Can he hear any sound?

Answer 1

well.... you'll hear the rolling sound like thunders

Explanation:

this is because when you pull the thread it will make large number of vibration per second that's why you can hear the sound of thunder.

in same way, suppose if you losen the thread and try to pull it will make less number of vibrations so you will not hear the sound

Answer 2

Answer:

he will hear the rolling sound of thunder

Explanation:

when she pull the thread it will make large number of vibration per second that's why he can hear the sound of thunder