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The wavelength of a wave traveling with a velocity of 420 ms-1 is 42 m. what is its ...

The wavelength of a wave traveling with a velocity of 420 ms-1 is 42 m. what is its period?
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  • A 1.2 s
  • B 1.0 s
  • C 0.5 s
  • D 0.1 s
Correct Answer: Option D
Explanation:
V = fλ
f = (v)/λ = (420)/42 = 10 HZ
Period, T = (1)/F = (1)/10 = 0.1 secs

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