Explain the principle of superposition - Vidyadip

Question

Explain the principle of superposition

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Answer

Principle of superposition : When two waves propogate simultaneously in a medium the displacement of each particle of the medium at any instant is equal to vector sum of the separate displacement of both. This principle is called superposition principle.
If at any moment the displacement by both the wive $y_1$ and $y_2$ then resultant displacement will be :
$
y=y_1+y_2
$
The frequency and amplitude of the resultant wave obtained as a result of superposition depend the following things:
(i) Frequency of wave (ii) amplitude of wave (iii) phase difference between wave (iv) direction of wave propagation.

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