Physics Waves DUHS 2023
PMDC Verified Question 46 of 125
The product of frequency and wavelength of a wave equals to:
A
Displacement of the wave
B
Amplitude of the wave
C
Speed of the wave
D
Time period of the wave
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Speed of the wave
Concept:

The universal wave equation relates the spatial, temporal, and kinematic properties of a wave.

Formula:

$$ v = f \lambda $$

Solution:

  • Frequency (\( f \)) represents the number of wave cycles passing a point per second.


  • Wavelength (\( \lambda \)) represents the physical length of one complete cycle.


  • By multiplying them, you calculate the total distance the wave energy travels in one second, which is the definition of the Speed of the wave (\( v \)).


Why other options are incorrect:

Displacement and amplitude are vertical measurements of the medium. Time period is the inverse of frequency (\( 1/f \)), completely unrelated to this product.

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.

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