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A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long...

Physics
JAMB 1989

A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, If the average distance between successive nodes on the wire is 45cm, find the speed of the transverse waves in the wire.

  • A. 27ms-1
  • B. 54ms-1
  • C. 90ms-1
  • D. 108ms-1
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Correct Answer: Option B
Explanation

f = 60Hz, l = 45cm = 0.45m

λ = 2l = 2 x 0.45 = 0.90m V = fλ = 0.9 x 60 = 54m/s


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