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The string of a simple pendulum is also assumed to be:

AInextensible
BStretchy
CConducting
DLuminous
Answer & Solution
Correct answer: A. Inextensible
1. The string must keep the bob at a fixed distance. 2. It therefore must not stretch during the swing. 3. So it is inextensible. _Source: syllabus Physics Part II, Chapter 14, Oscillations._
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