Physics Waves BUMHS 2022
PMDC Verified Question 59 of 125
The shortest distance between any two points in phase on a wave is called:
A
Displacement
B
Amplitude
C
Wavelength
D
Frequency
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Wavelength
Concept:

A wave's structural geometry repeats uniformly through space.

Solution:

  • Points that are "in phase" are in the exact same state of oscillation (e.g., two adjacent crests or two adjacent troughs).


  • The formal, fundamental definition of wavelength (\( \lambda \)) is the minimum physical distance over which the wave's shape fully repeats itself.


  • Therefore, the shortest distance between any two consecutive points oscillating entirely in phase is exactly one wavelength.


Why other options are incorrect:

Displacement is the instantaneous position of a particle. Amplitude is the maximum displacement. Frequency is a measure of time/cycles, not distance.

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