Consider two sound sources \( S_{1} \) and \( S_{2} \) having same ...

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Consider two sound sources \( S_{1} \) and \( S_{2} \) having same frequency \( 100 \mathrm{~Hz} \) and the observer \( \mathrm{O} \) located between them as shown in the fig. All the
P three are moving with same velocity in same direction. The beat frequency of the observer is
W
(A) \( 50 \mathrm{~Hz} \)
(B) \( 5 \mathrm{~Hz} \)
(C) zero
(D) \( 2.5 \mathrm{~Hz} \)
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