Physics Work & Energy UHS 2024
PMDC Verified Question 11 of 108
When a force of 1N displaces its point of application by 1m in the direction of force, the work done is
A
1 J
B
10 J
C
0 J
D
None of these
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 J
Concept:

This is the literal SI definition of one Joule.

Formula:

$$ W = F \times d $$

Solution:

  • Force (\( F \)) = 1 N


  • Displacement (\( d \)) = 1 m


  • Because they are in the same direction, \( \theta = 0^{\circ} \).


  • \( W = 1 \text{ N} \times 1 \text{ m} = 1 \text{ J} \).


Why other options are incorrect:

Zero work implies perpendicular force. 10 J is mathematically incorrect for \( 1 \times 1 \).

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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