Question

Define the following terms:
(i) vibrations
(ii) Time period
(iii) Frequency
(iv) Amplitude
(v) Wave length

Answer 1

Ans. Vibration
One complete round trip of a vibrating body about its mean position is called one vibration.

Time Period
The time taken by a vibrating body to complete one vibration is called time period. '                          .
Unit: The SI unit of time period is second(s).

Frequency
The number of vibrations per cycles of a vibrating body in one second is called frequency.

Unit: The SI unit of frequency is hertz (Hz).

Amplitude
The maximum displacement of a vibrating body on either side from its mean position is called amplitude.

Unit: The SI unit of a amplitude is metre (m).

Wavelength
The distance between two consecutive crests or troughs is. known as wavelength.
It is denoted by X.

Unit: The SI unit of wavelength is meter (m).