Q

An anchored boat is rocked by waves whose consecutive crests are 125 m apart. The wave speed is 25 m/s. What is the rocking frequency?

RRB ALP & Technician 29/08/2018 (Shift-III) 2018
✓ Answer: A 0.20 Hz
The crest spacing is the wavelength. f = v/λ = 25/125 = 0.20 Hz.
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