Physics-
General
Easy
Question
A small bob attached to a light inextensible thread of length l has a periodic time T when allowed to vibrate as a simple pendulum. The thread is now suspended from a fixed end O of a vertical rigid rod of length 
(as in figure). If now the pendulum performs periodic oscillations in this arrangement, the periodic time will be
- T
- 2T
The correct answer is: 2T
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