# A wheel of radius 1 𝑚 rolls forward half a revolution on a horizontal ground. The magnitude of thedisplacement of the point of wheel initially in contact with the ground is

Question : A wheel of radius 1 𝑚 rolls forward half a revolution on a horizontal ground. The magnitude of the displacement of the point of wheel initially in contact with the ground is

(A) $2\pi$

(B) $\sqrt{2}\pi$

(C) $\sqrt{\pi ^{2}+4}$

(D) $\pi$