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Standard XII

Physics

Interference in Sound Waves

A certain num...

Question

A certain number of beats are heard when two tuning forks of natural frequencies $n_{1}$ and $n_{2}$ are sounded together. The number of beats when one of the forks is loaded :

increases

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decreases

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remains same

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may increase or decrease

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Solution

The correct option is D may increase or decrease
$f_{B} = | n_{1} - n_{2} |$

And if one fork is loaded, then frequency of that fork get decreased .
$f_{B} = | n_{1} - n_{2} |$
$∴ f_{B}$ can increased or decreased ,
$f_{B}^{1} > f_{B}$ if $n_{1} < n_{2}$
$f_{B}^{1} < f_{B}$ if $n_{1} > n_{2}$

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A certain number of beats are heard when two tuning forks of natural frequencies n1 and n2 are sounded together. The number of beats when one of the forks is loaded :

The correct option is D may increase or decreasefB=|n1−n2|And if one fork is loaded, then frequency of that fork get decreased .fB=|n1−n2|∴fB can increased or decreased ,f1B>fB if n1<n2f1B<fB if n1>n2

A certain number of beats are heard when two tuning forks of natural frequencies $n_{1}$ and $n_{2}$ are sounded together. The number of beats when one of the forks is loaded :

The correct option is D may increase or decrease
$f_{B} = | n_{1} - n_{2} |$

And if one fork is loaded, then frequency of that fork get decreased .
$f_{B} = | n_{1} - n_{2} |$
$∴ f_{B}$ can increased or decreased ,
$f_{B}^{1} > f_{B}$ if $n_{1} < n_{2}$
$f_{B}^{1} < f_{B}$ if $n_{1} > n_{2}$