The graph shows a snapshot of a travelling harmonic wave: eight points ore indic

Question

The graph shows a snapshot of a travelling harmonic wave: eight points ore indicated. Answer the five questions by selecting from the choices below. E.g., if the answer to the first question is A, and the answers to the rest, B, enter ABBBB. You only have three tries! A) rightarrow B) uparrow C) leftarrow D) downarrow E) the velocity is zero I. If the wave is moving to the right, what is the direction of the velocity of the particle at point 2? II. If the wave is moving to the left, what is the direction of the velocity of the particle at point 4? iii. If the velocity of the particle at point 3 is given by the arrow B, in which direction is the wave moving? iv. If the velocity of the particle at point 3 is given by the arrow D, in which direction is the wove moving? v. If the wave is moving in the direction A, what is the direction of the velocity of the particle at point 7?

Explanation / Answer

1) At point 2, the displacement is maximum so velocity is zero. Ans: E

2) The wave has travelled left from 1 to 2 and then taken turn to right. Ans: A

3) Ans: D

4) Ans: B

5) Ans: E as it has maximum displacement.

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