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The distance between two points in phase on a progressive wave is 5cm. If the...

Physics
WAEC 2005
The distance between two points in phase on a progressive wave is 5cm. If the sped of the wave is 0.2ms-1, calculate its period
  • A. 4.00s
  • B. 2.50s
  • C. 0.25s
  • D. 0.04s
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Correct Answer: Option C
Explanation
F = \(\frac{v}{\lambda} = \frac{0.2}{5 \times 10^{-2}} = 4Hz\)

T = \(\frac{1}{f} = \frac{1}{4} = 0.25s\)
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