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Unilorin Post-UTME Physics 2022 (Model questions) Question 17

Question 17

Waves

A stationary wave pattern is formed by a wave of frequency 40Hz and velocity 60cms−1. What is the distance between adjacent nodes?

  1. A.0.33cm
  2. B.1.50cm
  3. C.0.67cm
  4. D.0.75cm
Show the answer and explanation

Answer: D (0.75cm)

Explanation

λ = v/f = 60 ÷ 40 = 1.5 cm. Adjacent nodes are half a wavelength apart: 0.75 cm.