Question Detail
Question
An observer standing at sea coast observes 54 waves reaching the coast per minute. If the wavelength of the waves is 10 m, find the velocity.
Correct Answer
Option A is the correct answer.
Detailed Explanation
Frequency f = 54 waves / 60 s = 0.9 Hz. Velocity v = fλ = 0.9 × 10 = 9 m/s.
Hint
v = fλ.