Question

The number of vibration/ oscillation executed per second is known as :
A. Frequency
B. Amplitude
C. Wavelength
D. Pitch

Answer 1

Hint: Vibration is a mechanical phenomena that causes oscillations around a fixed point. The term vibration is derived from the Latin vibrationem. The oscillations might be periodic, like those of a pendulum, or random, like those of a tyre on a gravel road. Oscillation is the periodic fluctuation of a measure around a central value or between two or more states, usually in time. Mechanical oscillation is exactly described by the term vibration. A swinging pendulum and alternating current are both instances of oscillation.

Complete step by step solution:
The number of times a recurring event occurs per unit of time is known as frequency. It is also known as temporal frequency to distinguish it from spatial frequency, and ordinary frequency to distinguish it from angular frequency. The unit of frequency is hertz (Hz), which equals one occurrence per second. The period is the reciprocal of the frequency since it represents the length of one cycle in a recurring occurrence.
For instance, if a newborn baby's heart beats 120 times per minute (2 hertz), the period, T (the time gap between beats), is half a second (60 seconds divided by 120 beats). Frequency is a key characteristic in science and engineering that describes the rate at which oscillatory and vibratory phenomena including mechanical vibrations, sound, radio waves, and light occur. The term frequency is defined as the number of cycles or vibrations per unit of time for cyclical phenomena such as oscillations, waves, or simple harmonic motion examples. Frequency is usually represented by the letter f, although it may alternatively be represented by the Greek letter nu$\nu $.
The period T is the amount of time it takes for an oscillation to complete one cycle. The equation expresses the relationship between frequency and period.
$f = \dfrac{1}{T}$
The term temporal frequency emphasises that frequency is defined by the number of occurrences of a recurring event per unit time rather than unit distance.

Note:
The hertz (Hz) is a SI-derived unit of frequency that was named after German physicist Heinrich Hertz in 1930 by the International Electrotechnical Commission. The CGPM formally accepted it in 1960, replacing the old designation "cycles per second" (cps). The second is the SI unit for the period, as it is for all time measurements. Revolutions per minute, abbreviated r/min or rpm, is a conventional unit of measure for spinning mechanical equipment. One hertz equals 60 revolutions per minute.