Physics Waves UHS 2024
PMDC Verified Question 20 of 125
The distance between two successive particles which are exactly in the same state of vibration is called:
A
Frequency
B
Amplitude
C
Wavelength
D
Time period
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:

Wave geometry is defined by repeating patterns of identical phase.

Solution:

  • When two particles are "exactly in the same state of vibration," it means they have the exact same vertical displacement and are moving in the exact same direction (they are fully "in phase").


  • Examples include two adjacent crests or two adjacent troughs.


  • The shortest physical, horizontal distance connecting these two identical successive points is the textbook definition of Wavelength (\( \lambda \)).


Why other options are incorrect:

Frequency (cycles per second) and Time Period (seconds per cycle) are measurements of time, not physical distance. Amplitude is vertical displacement.

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