Question

a particle moves along a circular path from one point to a diametrically opposite point, what is the magnitude of its displacement brainly

Answer 1

Is the radius of circular path is r therefore the distance travelled will be 2πr/2 since it is diametrically opposite , and in case of magnitude of displacement  the answer will be 2r or the diameter

Answer 2

In a circle diametrically opposite means another point of the diameter . So the magnitude of its displacement will be the value of it's diameter as anything is not given let us consider the value of radius as r so diameter is 2r.