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Q.

Given below are two statements. One is labelled as Assertion (A) and the other is labelled as reason (R).  
 

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An Intiative by Sri Chaitanya

a

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

b

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

c

(A) is true but (R) is false

d

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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