(C) The beat frequency is given by $f_b = |f_1 - f_2| = |384 - 380| = 4 \ Hz$.The time period of one complete beat cycle is $T = \frac{1}{f_b} = \frac

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(C) The beat frequency is given by $f_b = |f_1 - f_2| = |384 - 380| = 4 \ Hz$.The time period of one complete beat cycle is $T = \frac{1}{f_b} = \frac{1}{4} = 0.25 \ \text{seconds}$.$A$ beat cycle consists of one maximum (loud sound) and one minimum (faint sound).The time interval between a maximum sound and the subsequent minimum sound is half of the beat period.Therefore,$t = \frac{T}{2} = \frac{0.25}{2} = 0.125 \ \text{seconds}$.

Class 11 Physics Waves Beats and Tuning fork

Medium

Two tuning forks have frequencies $380 \ Hz$ and $384 \ Hz$ respectively. When they are sounded together,they produce $4$ beats per second. After hearing the maximum sound,how long will it take to hear the minimum sound in seconds?

A
$0.5$
B
$0.25$
C
$0.125$
D
$0.0625$

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Class 11 Questions

Class 11

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Waves

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Beats and Tuning fork

What is a beat? Obtain the equation for the number of beats produced in unit time.

Medium

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There are three sources of sound of equal intensities with frequencies $101 \, Hz$,$103 \, Hz$,and $106 \, Hz$. What is the beat frequency heard if all are sounded simultaneously (in $, Hz$)?

Difficult

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An observer while going on a scooter hears the sound of two sirens of the same frequency from two opposite directions. If he travels along the direction of one of the sirens,then he:

Easy

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An unknown frequency $x$ produces $8$ beats per second with a frequency of $250 \ Hz$ and $12$ beats per second with a $270 \ Hz$ source. Then $x$ is .... $Hz$.

Medium

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Two sound sources,when sounded simultaneously,produce four beats in $0.25 \ s$. The difference in their frequencies must be: (in $Hz$)

Medium

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Two tuning forks have frequencies $380 \ Hz$ and $384 \ Hz$ respectively. When they are sounded together,they produce $4$ beats per second. After hearing the maximum sound,how long will it take to hear the minimum sound in seconds?

Similar Questions

What is a beat? Obtain the equation for the number of beats produced in unit time.

There are three sources of sound of equal intensities with frequencies $101 \, Hz$,$103 \, Hz$,and $106 \, Hz$. What is the beat frequency heard if all are sounded simultaneously (in $, Hz$)?

An observer while going on a scooter hears the sound of two sirens of the same frequency from two opposite directions. If he travels along the direction of one of the sirens,then he:

An unknown frequency $x$ produces $8$ beats per second with a frequency of $250 \ Hz$ and $12$ beats per second with a $270 \ Hz$ source. Then $x$ is .... $Hz$.

Two sound sources,when sounded simultaneously,produce four beats in $0.25 \ s$. The difference in their frequencies must be: (in $Hz$)

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