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(B) In $U.C.M.$ (Uniform Circular Motion), a particle moves along a circular path of radius $R$.For half the period of revolution, the particle moves

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$2R, \pi R$

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(B) In $U.C.M.$ (Uniform Circular Motion), a particle moves along a circular path of radius $R$.For half the period of revolution, the particle moves from one end of a diameter to the other end.Displacement is the shortest distance between the initial and final positions, which is the diameter of the circle: $Displacement = 2R$.Distance covered is the length of the path traveled along the circumference. For half a revolution, the distance is half of the circumference: $Distance = \frac{1}{2} 	imes (2\pi R) = \pi R$.Therefore, the displacement and distance covered are $2R$ and $\pi R$ respectively.

$A$ particle is performing $U.C.M.$ along a circle of radius $R$. In half the period of revolution, its displacement and distance covered are respectively

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