Question

# The length of second pendulum is :

A
100 cm
B
99 cm
C
99.4 cm
D
98 cm
Solution
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#### Time period of second pendulum T=2 sTime period T=2π√lgwhere l is the length of pendulum.∴2=2π√l9.8⟹ l=0.994 m=99.4 cm

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