Motion in which an object moves to and fro about a mean position is called:
AOscillatory
BObligatory
CObservatory
DOrnamental
Answer & Solution
Correct answer: A. Oscillatory
1. Some motions repeat by going round and some by going back and forth.
2. Here the object returns through the same central point each time.
3. The object moves to and fro about a mean position, so the motion is oscillatory.
4. So the answer is oscillatory.
_Source: NCERT Class XI Physics Part II, Ch 13 'Oscillations'_
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