Question

While studying the reflection of sound. Four students A,B,C and D used different reflection surface who would the best result and why?
(A)- A thermocol sheet
(B)- A Polished Plane matel sheet
(C)- A rough cardbord sheet
(D)- A Cushioned chair

Answer 1

B ....... is the answer smooth surface is perfect for .. sound exp.

Answer 2

a polished plane metal sheet would be best option because it is clear and it doesn't have any rough surface so the reflection would be better in that