Two tuning forks \( P \) and \( Q \) are vibrated together. The num...

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Two tuning forks \( P \) and \( Q \) are vibrated together. The numbers of beats produced are represented by the straight line \( O A \) in the following graph. After loading \( Q \) with wax again these are vibrated together and the beats produced
\( \mathrm{P} \) are represented by the line \( O B \). If the frequency of \( P \) is \( 341 \mathrm{~Hz} \), the frequency of \( Q \) will be
(a) \( 341 \mathrm{~Hz} \)
(b) \( 338 \mathrm{~Hz} \)
(c) \( 344 \mathrm{~Hz} \)
(d) None of the above
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