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JAMB Physics 1986 Question 34

Question 34

Waves

A wave of frequency 10 Hz forms a stationary wave pattern in a medium where the velocity is 20 cm s−1. The distance between adjacent nodes is

  1. A.1.0 cm
  2. B.1.5 cm
  3. C.2.0 cm
  4. D.5.0 cm
Show the answer and explanation

Answer: A (1.0 cm)

Explanation

λ = v/f = 20/10 = 2 cm. Adjacent nodes are λ/2 = 1 cm apart.