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The free end of the pendulum string is fixed to a support that is:
ASlack
BRigid
CLoose
DBouncy
Answer & Solution
Correct answer: B. Rigid
1. The pivot must not move as the bob swings.
2. Any give in it would alter the motion.
3. So the support is rigid.
_Source: NCERT Class 11 Physics Part II, Chapter 14, Oscillations._
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