Question

What is meant by the terms:
(a) amplitude
(b) frequency of a wave

Answer 1

(a): Definition of Amplitude:

1. The amplitude of any periodic motion is nothing but the maximum displacement that a particle covers from its equilibrium position during the vibration.
2. The amplitude is denoted by the letter A
3. The dimension of amplitude is same as the dimension of length.

(b): Definition of frequency of a wave:

1. The frequency of the wave is the number of complete vibrations that a wave performs in a second.
2. The frequency of the wave is denoted by the letter $f$.
3. The dimension of the frequency of the wave is same as the dimension of time inverse.
4. The SI the unit of frequency is given by $Hertz\left(Hz\right)$.
5. The frequency of the wave is given by $f=\frac{v}{\lambda }$ where $v$ is the speed of the wave and $\lambda$ is the wavelength of the wave.