MCQ
The period of a simple pendulum is doubled, when
- AIts length is doubled
- BThe mass of the bob is doubled
- ✓Its length is made four times
- DThe mass of the bob and the length of the pendulum are doubled
✓
Answer
Correct option: C.
Its length is made four times
c
(c) $T = 2\pi \sqrt {\frac{l}{g}} $
(c) $T = 2\pi \sqrt {\frac{l}{g}} $
==> $T \propto \sqrt l $
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