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  4. The figure shows an instantaneous profile of a rope carrying a progressive wave moving from left to right, then <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/physics/ca258220f9bd6e27e3f9f5a21e8cc31f-.png /> (a) the phase at A is greater than the phase at B (b) the phase at B is greater than the phase at A (c) A is moving upwards (d) B is moving upwards

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Q. The figure shows an instantaneous profile of a rope carrying a progressive wave moving from left to right, then
image
(a) the phase at $A$ is greater than the phase at $B$
(b) the phase at $B$ is greater than the phase at $A$
(c) A is moving upwards
(d) $B$ is moving upwards

Waves

Solution:

image
from figure $A$ is moving down $\& B$ is moving up and the phase at $A$ is greater the phase at $B$.