MCQ
A string is stretched between fixed points separated by $75.0\ cm.$ It is observed to have resonant frequencies of $420Hz$ and $315Hz.$ There are no other resonant frequencies between these two. Then the lowest resonance frequency for this string is:
  • A
    $1.05Hz$
  • B
    $1050Hz$
  • C
    $10.5Hz$
  • $105Hz$

Answer

Correct option: D.
$105Hz$

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