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Question
In a stationary wave,
(a) all the particles of the medium vibrate in phase
(b) all the antinodes vibrates in phase
(c) the alternate antinodes vibrate in phase
(d) all the particles between consecutive nodes vibrate in phase.
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Solution
(c) the alternate antinodes vibrate in phase
(d) all the particles between consecutive nodes vibrate in phase
All particles in a particular segment between two nodes vibrate in the same phase, but the particles in the neighbouring segments vibrate in opposite phases, as shown below.
Thus, particles in alternate antinodes vibrate in the same phase.
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