Define the following terms:

(a) Amplitude

(b) Frequency

(c) Time period

(a) Amplitude (a) — The maximum displacement of a particle of medium on either side of its mean position, is called the amplitude of wave.

(b) Frequency (f) — The number of vibrations produced by a particle of the medium in one second is called the frequency of the wave.

(c) Time period (T) — The time taken by a particle of medium to complete its one vibration is called the time period of the wave.