In an experiment with sonometer a tuning fork of frequency $256 Hz$ resonates with a length of $25 cm$ and another tuning fork resonates with a length of $16 cm$. Tension of the string remaining constant the frequency of the second tuning fork is ....  $Hz$
  • A$163.84$
  • B$400$
  • C$320$
  • D$204.8$
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