Physics Waves SZABMU 2022
PMDC Verified Question 76 of 125
Wavelength of wave is defined as:
A
Distance between two consecutive crests
B
Distance between two alternate crests
C
Distance between two alternate troughs
D
Distance between two crest and two troughs
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Distance between two consecutive crests
Concept:

Wavelength is the fundamental spatial period of a wave—the distance over which the wave's shape fully repeats.

Solution:

  • By definition, one complete wave cycle spans from one specific phase state to the exact next identical phase state.


  • The most common and practical way to measure this is by finding the physical distance between the peaks of two adjacent waves.


  • Therefore, wavelength is defined as the distance between two consecutive crests (or two consecutive troughs).


Why other options are incorrect:

Alternate crests (skipping one) would measure exactly two wavelengths (\( 2\lambda \)). Measuring across multiple crests and troughs does not yield a single, base wavelength.

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