56 tuning forks are arranged such that each fork produces 4 beats per second with its previous one. If the…

56 tuning forks are arranged such that each fork produces 4 beats per second with its previous one. If the frequency of the last fork is twice that of the first, the frequency of $19^{\text {th }}$ fork is ____
  1. $292 \mathrm{~Hz}$
  2. $302 \mathrm{~Hz}$
  3. $272 \mathrm{~Hz}$
  4. $312 \mathrm{~Hz}$

Solution

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Asked in: AP EAMCET 2017 (24 Apr Shift 1)

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