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A stone is whirled on a string. The inward force keeping it on its circle is the centripetal force, supplied here by the:
ATorsion
BTraction
CTransfer
DTension
Answer & Solution
Correct answer: D. Tension
1. Something must pull the stone toward the centre continuously.
2. The only thing attached to the stone is the string.
3. So the tension in the string supplies the centripetal force.
_Source: NCERT Class 11 Physics Part I, Chapter 5, Laws of Motion._
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