Q141 / 180 · KCET 2023 · Physics

A particle is in uniform circular motion, related to one complete revolution of the particle, which among the statements is incorrect?

  • A
    Average acceleration of the particle is zero.
  • B
    Displacement of the particle is zero.
  • Correct answer
    C
    Average speed of the particle is zero.
  • D
    Average velocity of the particle is zero.

Solution

Since, distance travelled by the body is not zero in one complete revolution, hence average speed is not zero. In a circular motion, the displacement of the particle is zero, if it completes one revolution. Therefore average velocity which is ratio of total displacement to the total time taken is also zero.

Hence, the correct answer is option: 'C'.

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