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JAMB Physics 1979 Question 13

Question 13

Waves

If the wavelength of a wave travelling with a velocity of 360 m s−1 is 60 m, the period of the wave is

  1. A.6 s
  2. B.3.6 s
  3. C.0.17 s
  4. D.0.61 s
  5. E.3 s
Show the answer and explanation

Answer: C (0.17 s)

Explanation

Frequency f = v/λ = 360/60 = 6 Hz, so the period T = 1/f = 1/6 ≈ 0.17 s.