A) No force is acting on particle
B) Velocity of particle is constant
C) Particle has no acceleration
D) No work is done
Correct Answer: D
Solution :
When a particle is rotating in a circle, a centripetal force sxists on it, and it is at right angle to the displacement of the particle. Therefore, work done \[W=Fd\cos \theta \] \[=Fd\cos {{90}^{o}}\] \[(as\,\theta ={{0}^{o}})\] \[=0\] (as \[\cos {{90}^{o}}=0\])
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