A progressive wave of frequency 400 Hz is travelling with a velocity 336 m/s. How far apart are the two points which are 60° out of phase? (a) 0.14 m (b) 0.21 m (c) 0.24 m (d) 0.28 m

Answer: (a). λ = v/f = (336)/(400) = 0.84 m Δ x = (λ)/(6) = 0.14 m for 60° So the answer is (a) 0.14 m.

A progressive wave of frequency 400 Hz is travelling with a velocity… | MHT CET 2024 (4 May, Shift 1)

Q43MHT CET 2024 · 4 MAY · SHIFT 1Easy

Progressive Wave Equation

A progressive wave of frequency 400 Hz is travelling with a velocity $336\text{ m/s}$ . How far apart are the two points which are $60^\circ$ out of phase?

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Answer: (a)

$\lambda = \frac{v}{f} = \frac{336}{400} = 0.84$ m
$\Delta x = \frac{\lambda}{6} = 0.14$ m for $60^\circ$
So the answer is (a) 0.14 m.

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