What is the wavelength if the distance between a crest and immediate trough in a transverse wave is 15 m?
Correct answer: A. 30 m
- A. 30 m
- B. 40 m
- C. 50 m
- D. 15 m
Explanation
The distance between two successive crests or troughs is the wavelength (λ). Thus, the distance between between a crest and immediate trough = λ/2or 15= λ/2or λ = 30 m
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Wave speed is the rate at which a disturbance or wave pattern travels through a medium, given by v = fλ, where f is frequency and λ is wavelength. Questions examine how speed changes between media, the relation among frequency, wavelength and period, and why wave speed is not the same as particle vibration speed.
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