what is meant by frequency of vibration?state its unit?

Question

this question is related to V11th class book of science of NCERT

Answer 1

Vibration refers to mechanical motion. The motion may be:

Periodic (in the form of oscillations)
Aperiodic (in the form of random noise)
A mixture of the two
Vibration is occasionally desirable. For example the motion of a tuning fork, the reed in a woodwind instrument or harmonica, or the cone of a loudspeaker is desirable vibration, necessary for the correct functioning of the various devices.
The vibrating alert in a cell phone or the much larger vibrations of a vibratory compactor are additional examples where the vibration is desired.

Vibrating Frequency is the measurement of the number of times that a repeated event occurs per unit of time. It is also defined as the rate of change of phase of a sinusoidal waveform created by vibration.

Unit of frequency of vibration - the number of cycles per second
=second^(-1)
=hertz or kilo hertz.

(In SI units, the result is measured in hertz (Hz), named after the German physicist Heinrich Rudolf Hertz. 1 Hz means that an event repeats once per second, 2 Hz is twice per second, and so on. This unit was originally called a cycle per second (cps), which is still used sometimes. Other units that are used to measure frequency include revolutions per minute (rpm) and radians per second (rad/s). Heart rate and musical tempo are measured in beats per minute (BPM).

An alternative method to calculate frequency is to measure the time between two consecutive occurrences of the event (the period) and then compute the frequency f as the reciprocal of this time.

Frequency of waves:
Frequency has an inverse relationship to the concept of wavelength. The frequency f is equal to the speed v of the wave divided by the wavelength λ (lambda) of the wave

Answer 2

When something vibrates, it is moving back and forth. Another similar term is oscillation. The frequency is the rate at which the object moves one complete cycle. When a the hammer of a piano strikes the string(s) of the middle-C note, the string vibrates at approximately 262 cycles/sec, or 262 Hz (Hertz). That is, the string moves up and down and back up (one complete cycle) every 1/262 of a second, producing the note you hear.

Hope this helps!

Answer 3

frequency of vibration is the number of vibrations made per unit time (second). Its unit is Hertz (Hz) which stands for one complete vibration per second.

Answer 4

What Is Meant By Vibration

Answer 5

Frequency of vibration = number of vibration in one second

Answer 6

Cycles/sec,Hertz 1/sec

Answer 7

cycles/ second are the units used for vibrations.

also know as Hertz. 1/sec

Answer 8

Hi

It is the number of cycles described in one second.

Its unit is Hz.

Answer 9

It is measured in cycles per second, as rule. Which is known as hertz(Hz)

It may also be measured in revolutions per minute.
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In simplest form, how many time it is vibrating in unit period of time.( in one second).

Answer 10

No. of waves per unit time.