Question

A tuning fork, struck by a rubber pad, is held over a length of air column in a tube. It produces a loud sound for a fixed length of air column.

1. Name the above phenomenon.
2. How does the frequency of loud sound compare with that of the tuning fork?
3. State the unit for measuring loudness.

Answer 1

(a) The phenomenon is resonance.

(b) The frequency of the loud sound is equal to the frequency of the tuning fork.

(c) Loudness level is measured in decibels (dB).