Ten tuning forks are arranged in increasing order of \( \mathrm{P} ...

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Ten tuning forks are arranged in increasing order of
\( \mathrm{P} \) frequency in such a way that any two consecutive

W tuning forks produce 4 beats per second. The highest frequency is twice that of the lowest. Possible highest and lowest frequencies (in \( \mathrm{Hz} \) ) are
(1) 80 and 40
(2) 100 and 50
(3) 44 and 22
(4) 72 and 36
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