(A) : In a perfect stationary wave, there is no transfer of energy.
(R) : There is no net onward motion of the disturbance from one particle to adjoining particle in stationary wave.

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(A) is true but (R) is false

Both (A) and (R) are true but (R) is not the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

answer is A.

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Detailed Solution

Because there is no net onward motion of the disturbance from one particle to next particle in a stationary wave, there is no energy transfer in a perfect stationary wave.

The overall energy of a stationary wave is twice that of an incident wave and twice that of a reflected wave. Standing waves have a lot of energy that is stored evenly and becomes stuck. Thus, no energy is transferred by the waves.

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