The diagram shows the propagation of a progressive wave. A, B, C, D… | MHT CET 2024 (9 May, Shift 2)

Q40MHT CET 2024 · 9 MAY · SHIFT 2Easy

Progressive Wave Equation

The diagram shows the propagation of a progressive wave. A, B, C, D, E are five points on this wave

Which of the following points are in the same state of vibration?

Show answer and solution

Answer: (d)

Points in the same state of vibration have the same displacement and the same direction of motion (phase difference $2\pi n$ ).
B and E both have the same positive displacement and both lie on the falling side of a crest.
B and E are two full wavelengths apart, so they are in phase.
So the answer is (d) E, B.

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