A certain wave has a speed of 20ms -1 . If the frequency of the

PHYSICS
WAEC 2011

A certain wave has a speed of 20ms-1. If the frequency of the wave is 0.25Hz, calculate the distance between successive crests of the wave

  • A. 5.0m
  • B. 40.0m
  • C. 50.0m
  • D. 80.0m

Correct Answer: D. 80.0m

Explanation

\(\lambda = \frac{v}{f} = \frac{20}{0.25} = 80\)



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