Energy in Stationary Waves – Rankers Physics
Topic: Waves
Subtopic: Standing Wave in String and Organ Pipe

Energy in Stationary Waves

Assertion (A): The energy stored by a stationary wave is zero.
Reason (R): When two identical waves travelling in opposite directions superimpose, their whole energy is converted into heat.
 
Both (A) & (R) are true and the (R) is the correct explanation of the (A)
Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(A) is true but (R) is false
Both (A) and (R) are false

Solution:

Assertion (A) is false; a stationary wave stores energy, which oscillates between kinetic and potential forms.


Reason (R) is false; energy is not converted to heat but redistributed to form the stationary wave pattern.

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