Question

# The length of the simple pendulum which ticks seconds is:

A
0.5m
B
1m
C
1.5m
D
2m
Solution
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#### The correct option is B1mThe time period of a simple pendulum isT=2π√Lgwhere L is the length of the pendulum.or L=gT24π2The time period of the simple pendulum which ticks seconds is 2s.∴T=2sSubstituting in (i), we getL=(9.8ms−2)(2s)24×(3.14)2=1m

2
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