Question

Explain the reason behind the precautions to be taken in the experiment of reflection of sound

Answer 1

If you take large amplitude sound source then you can hear sound almost every where directly from the source, and so you will not be able to distinguish the difference between reflected sound and direct sound. That's why we take small amplitude sound source.

Hope this information will clear your doubts about this topic.

Answer 2

To keep the room soundproof,sound absorbing materials like heavy curtains and carpets are not used,angle should be measured accurately,otherwise,correct result wouldnt be obtained