Easy MCQ +4 / -1 PYQ · JEE Mains 2021

Which of the following equations represents a travelling wave?

  1. A y = Ae<sup>x</sup>cos($\omega$t $-$ $\theta$)
  2. B y = Ae<sup>$-$x<sup>2</sup></sup>(vt + $\theta$)
  3. C y = A sin (15x $-$ 2t) Correct answer
  4. D y = A sinx cos$\omega$t

Solution

Y = F(x, t)<br><br>For travelling wave y should be linear function of x and t and they must exist as (x $\pm$ vt)<br><br>Y = A sin (15x $-$ 2t) $\to$ linear function in x and t.

About this question

Subject: Physics · Chapter: Waves · Topic: Wave Motion and Types

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