Match the following Column I to Column II

Answer

`A:C ,B:A,C:D,D:E,E:B`

Explanation

`A -C` When a sound wave is reflected, the angle of incident sound () is equal to the angle. of reflected sound. B-a The persistence of hearing for humans is 0.1 s. C-d Dolphins use echo method to catch their prey.
d-e Carpets are sound absorbing materials and reduce noise pollution. E-b Sound with frequency less than 20 Hz is known as infrasonic.