Question

Why is it meant by frequency?

Answer 1

Hint: Here in order to understand about the term frequency. Anything that happens at a repeated time interval. Let’s see this in detail.

Complete step by step solution:
Frequency is defined as the number of oscillations or vibrations per second. The below equation relates between frequency and time period.
\[f = \dfrac{1}{T}\]
Where, f is frequency and T is the time period.
The unit of time period is second written as s, and the unit of frequency is hertz denoted by Hz.

Suppose say if the time period is 10seconds, then by using the formula \[f = \dfrac{1}{{10}}\]. Then the frequency is 0.1 hertz. As the number of cycles increases, frequency also increases. One hertz is defined as one cycle per second. Then the cycle is defined as one complete cycle of AC or DC.

Time period is the time taken to complete one oscillation or vibration of a wave. Basically, frequency is something which repeats over a small period of time. We have discussed frequency till this point. Now let’s look at the word natural frequency. It is the frequency at which an object vibrates naturally in the absence of driving force.

Note:There are some relative terms to the frequency that we are going to discuss now. In the wave form the parts of the wave are represented clearly.

Parts of a wave are,
Wavelength- The distance between the two consecutive crests or troughs is known as wavelength of a wave and is denoted by \[\lambda \].
Amplitude- The maximum displacement of a particle from its mean position is called the amplitude of a wave and it is denoted by A.
Crest- The upper part of the wave in which there is a maximum displacement of the medium.
Trough- Lower part of the wave in which there is a minimum displacement of the medium.