MHT-CET Physics and Chemistry Full Test-17 PHY-QUE-37 Solutions

Question-37 An observer on sea-coast counts $45$ waves in one minute. If the wavelength of the waves is $7\ m$ , then velocity of the waves will be

(A) $4.75\ m/s$

(B) $5.25\ m/s$

(D) $8.65\ m/s$

Answer : (C)

Explanation:

Given: n = 45 waves/min = 0.75 waves/s

Velocity, v = nλ = 0.75 × 7 = 5.25 m/s

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