Physics Waves SZABMU 2022
PMDC Verified Question 81 of 125
Continuous, regular and rhythmic disturbance in a medium resulting periodic vibration of a source causes ____ in the medium.
A
Complex waves
B
Stationary waves
C
Electromagnetic waves
D
Periodic waves
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: Periodic waves
Concept:

Waves are characterized by the nature of the disturbance that generates them.

Solution:

  • If a source produces a single, isolated disturbance, it generates a "wave pulse."


  • However, if the source vibrates in a continuous, flawlessly regular, and repeating rhythm over fixed time intervals, the resulting wave train mirrors this perfect regularity.


  • Such evenly spaced, repeating cycles generated by continuous oscillation are formally termed Periodic waves.


Why other options are incorrect:

Stationary waves require interference from a reflected boundary. Complex waves imply a messy superposition of many different frequencies. Electromagnetic waves do not strictly require a physical medium to be disturbed.

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