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MHT CET 2021 (21 Sep, Shift 1) · Progressive Wave Equation

Progressive Wave Equation question from MHT CET 2021 (21 Sep, Shift 1)

Q72MHT CET 2021 · 21 SEP · SHIFT 1Easy

Progressive Wave Equation

A progressive wave of frequency 50 Hz is travelling with velocity 350 m/s through a medium. The change in phase at a given time interval of 0.01 second is

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Answer: (c)

At a fixed point, phase changes with time as $\Delta\phi = 2\pi f\,\Delta t$ .
$\Delta\phi = 2\pi \times 50 \times 0.01 = \pi$ rad
So the answer is (c) $\pi$ rad.

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