What is beat frequency?

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) Beat frequency is defined as the number of beats produced per unit time.
When two sound waves of slightly different frequencies,$f_1$ and $f_2$,interfere with each other,the resulting intensity of the sound varies periodically.
The frequency of this variation in intensity is known as the beat frequency $(f_b)$.
It is mathematically expressed as the absolute difference between the two frequencies: $f_b = |f_1 - f_2|$.

Explore More

Similar Questions

When a tuning fork is vibrating,the vibrations of the two prongs

The wavelengths of two sound notes in air are $\frac{40}{195} \,m$ and $\frac{40}{193} \,m$. Each note produces $9$ beats per second separately with a third note of fixed frequency. The velocity of sound in air in $m/s$ is

$A$ tuning fork sounded together with a tuning fork of frequency $256 \ Hz$ emits $2$ beats per second. On loading the tuning fork of frequency $256 \ Hz,$ the number of beats heard is $1$ per second. The frequency of the unknown tuning fork is: (in $Hz$)

For the formation of beats,two sound notes must have:

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo