For a mechanical wave in a medium, the speed depends primarily on 
AOnly the amplitude of the wave
BOnly the frequency of the source
CProperties of the medium such as elasticity and inertia
DThe phase difference between particles
Answer & Solution
Correct answer: C. Properties of the medium such as elasticity and inertia
The figure indicates that mechanical wave speed depends on medium properties. In general, it is governed by elastic restoring tendency and inertia, not directly by amplitude or source frequency.
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