Physics Rotational & Circular Motion BUMHS 2022
PMDC Verified Question 58 of 95
According to the right-hand rule, the direction of angular displacement is along the?
A
Curl of fingers
B
First finger
C
Pointing thumb
D
Second finger
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Pointing thumb
Concept:

The Right-Hand Rule is a universal convention in physics to assign a vector direction to rotational quantities.

Solution:

  • Grasp the axis of rotation in your right hand.
  • Curl your fingers in the direction of the actual physical rotation (the angular path).
  • Your strictly extended, pointing thumb indicates the vector direction of the angular displacement, velocity, and acceleration.


Why other options are incorrect:

  • Option A represents the path of motion, not the derived vector direction.
  • Option B and Option D are used in Fleming's rules for electromagnetism, not basic rotational kinematics.

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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