Physics Waves PMDC 2021
PMDC Verified Question 90 of 125
Crest and trough are found in?
A
Transvers wave
B
Longitudinal wave
C
Progressive wave
D
None
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Transvers wave
Concept:

Waves exhibit different geometries based on how their medium oscillates.

Solution:

  • In a transverse wave, particles oscillate perpendicular to the wave's path, creating alternating high points (crests) and low points (troughs).


  • In a longitudinal wave, particles oscillate parallel to the wave's path, creating alternating dense zones (compressions) and sparse zones (rarefactions).


Why other options are incorrect:

Longitudinal waves have compressions/rarefactions, not crests/troughs. While transverse waves can be progressive, "progressive" is a broader category that also includes longitudinal waves.

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.

Previous Question All Waves MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App