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Q.1 of 75
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Beat phenomenon is
physically meaningful only if
| 01 -
>l01 +02​

Answer 1

Answer:

question is not clear buddy

Answer 2

Beat Phenomenon is physically meaningful only when there is superimposition of 2 progressive waves having comparable frequency.

Let's consider 2 waves :

$1) \: y = a \sin \{ (\omega1)t - kx \}$

$2) \: y = a \sin \{ (\omega2)t - kx \}$

Let the difference of the frequency of these waves differ atmost by 10 Hz.

Then , superimposition of this waves will lead to to periodic changes in the amplitude of the final wave. This phenomenon is called Beats.

The beat frequency will be :

$\sf{ \therefore \: n = \dfrac{ \omega2 - \omega1}{2\pi} }$

$\sf{ = > \: n = \dfrac{ \omega2 }{2\pi} - \dfrac{ \omega1}{2\pi} }$

$\sf{ = > \: n = f2 - f1 }$

Hence , beat frequency is

$\boxed{ \red{\rm{ \: n = f2 - f1 }}}$