A wave equation is represented as r = A sin [ α 2 x − y ] cos [ ω t − α 2 x + y ] where x and y are in metre and t is in second. Then:

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A wave equation is represented as $r = A sin [α \frac{x - y}{2}] cos [ω t - α \frac{x + y}{2}]$ where $x$ and $y$ are in metre and $t$ is in second. Then:

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Solution:

On that line $x - y = - 4 π / α$ , so $sin [α (x - y) /2] = sin (- 2 π) = 0$ and $r = 0$ at all times.

Stream:JEESubject:PhysicsTopic:Wave on StringSubtopic:Waves

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