Physics Rotational & Circular Motion DUHS 2023
PMDC Verified Question 38 of 95
Which of the following results in the centripetal acceleration produced in a body?
A
Change in magnitude of velocity
B
Change in mass
C
Change in magnitude of force
D
Change in direction of velocity
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Change in direction of velocity
Concept:

Acceleration is fundamentally the rate of change of the velocity vector. Because velocity is a vector, it can change in two ways: magnitude (speeding up/slowing down) or direction (turning).

Solution:

  • In pure circular motion, the speed (magnitude) may remain perfectly constant.
  • However, the object's path is constantly curving inward.
  • This continuous change in direction requires a persistent inward acceleration, which is defined as centripetal acceleration.


Why other options are incorrect:

  • Option A produces tangential acceleration, not centripetal.
  • Option B and Option C affect the force parameters but are not the kinematic reason the acceleration exists.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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