A wave of frequency $100 Hz$ is sent along a string towards a fixed end. When this wave travels back after reflection, a node is formed at a distance of $10 cm$ from the fixed end of the string. The speed of incident (and reflected) wave are .... $m/s$
  • A$40 $
  • B$20$
  • C$10 $
  • D$5$
AIPMT 1994, Easy
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