Question

What is frequency ? Write it's types.​

Answer 1

answer:-

Frequency is the number of occurrences of a repeating event per unit of time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. Frequency is measured in units of hertz (Hz) which is equal to one occurrence of a repeating event per second.

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Answer 2

Answer:

The frequency is the number of oscillation per unit time. It is used for defining the cyclic process like rotation, oscillation, wave etc. The completion of the cyclic process at particular interval of time is known as the frequency.

The SI unit of the frequency is Hertz. The symbol λ represents it. The one hertz means the wave completed one cycle in one second. The traditional unit for measuring the cyclic process is revolution per second which is equal to one hertz.

Types of Frequency

The frequency is mainly classified into two categories.

1. Angular Frequency – The angular frequency shows the number of revolution at the fixed interval of time. The unit of angular frequency is Hertz. The relation between the frequency and angular frequency is expressed as;

Where, ω – angular frequency

2. Spatial Frequency – The frequency which depends on the spatial coordinate is known as the spatial frequency. It is inversely proportional to the wavelength. The spatial frequency measures the characteristic of the structure that is periodic in space.