Physics Force & Motion MDCAT 2017
PMDC Verified Question 118 of 137
The ratio of displacement along diameter and total distance along circle:
A
\( 1 : \pi \)
B
\( 2 : \pi \)
C
\( \pi : 1 \)
D
\( \pi : 2 \)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: \( 1 : \pi \)
Concept:

Displacement is the straight line (diameter), distance is the perimeter.

Solution:

  • Displacement \( |d| = 2r \).


  • Distance \( S = 2\pi r \).


  • Ratio \( \frac{2r}{2\pi r} = 1:\pi \).


Why other options are incorrect:

\( 2:\pi \) applies if distance is only a semicircle.

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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