alleryThe to-and-fro motion of an object is also called:
ALinear motion
BRandom motion
CRotational motion
DVibration / oscillatory motion
Answer & Solution
Correct answer: D. Vibration / oscillatory motion
To-and-fro motion is the defining feature of a vibration or oscillation.
A pendulum, a plucked guitar string, and a struck tuning fork all undergo oscillatory motion — and all produce sound.
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