Physics Waves NUMS 2023
PMDC Verified Question 54 of 125
At maximum displacement of particles of a medium, on either side of the mean position of a wave, is called:
A
Wavelength
B
Frequency
C
Amplitude
D
Crest
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Amplitude
Concept:

Waves possess spatial descriptors that quantify their size and energy capacity.

Solution:

  • As particles oscillate around their resting (mean) position, they travel a specific distance outward before turning back.


  • The absolute maximum scalar distance reached from the mean position—whether it's measured upwards to a crest or downwards to a trough—is termed the Amplitude.


  • Amplitude is a direct indicator of the wave's energy.


Why other options are incorrect:

Option D (Crest) is solely the peak point on one specific side, whereas amplitude describes the scalar maximum displacement regardless of direction. Wavelength and frequency define the wave's repeating structure.

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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