The length of a seconds pendulum is - Vidyadip

MCQ

The length of a seconds pendulum is

A
$99.8\ cm$
✓
$99 \ cm$
C
$100\ cm$
D
None of these

✓

Answer

Correct option: B.

$99 \ cm$

(b) $T=2 \pi \sqrt{l / g} \Rightarrow l=\frac{g T^2}{4 \pi^2}=\frac{9.8 \times 4}{4 \times \pi^2}=99 \mathrm{~cm}$

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