For a particle moving in a circle with constant angular speed, which of the following statements is 'false'? (a) The velocity vector is tangent to the circle. (b) The acceleration vector is tangent to the circle. (c) The velocity and acceleration vectors are perpendicular to each other. (d) The acceleration vector points to the centre of the circle.

Answer: (b). (a) True: velocity is always along the tangent. (b) False: in uniform circular motion the acceleration is centripetal, along the radius, not along the tangent. (c) True: radial acceleration is perpendicular to tangential velocity. (d) True: acceleration v²/r points to the centre. So the answer is (b).

For a particle moving in a circle with constant angular speed, which… | MHT CET 2025 (20 Apr, Shift 1)

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Centripetal Acceleration & Force

For a particle moving in a circle with constant angular speed, which of the following statements is 'false'?

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Answer: (b)

(a) True: velocity is always along the tangent.
(b) False: in uniform circular motion the acceleration is centripetal, along the radius, not along the tangent.
(c) True: radial acceleration is perpendicular to tangential velocity.
(d) True: acceleration $\frac{v^2}{r}$ points to the centre.
So the answer is (b).

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Centripetal Acceleration & Force question from MHT CET 2025 (20 Apr, Shift 1)

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