Single Choice

A wave is moving towards positive x-axis as shown in figure. Then the point(s) at which acceleration and velocity of particle are parallel to each other

AA, D
BB, C
CA
DA, C
Correct Answer

Solution

Since the wave is moving towards right, the direction of velocity of points is as given-
A-downwards
B-upwards
C-upwards
D-downwards
Also the direction of acceleration of particle is always towards the mean position. Hence the direction of acceleration of particle is given as-
A-downwards
B-downwards
C-upwards
D-upwards
Hence, the correct answer is option D.

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