The length of the simple pendulum which ticks seconds is:
0.5m
2m
1m
1.5m
A
0.5m
B
1.5m
C
2m
D
1m
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Solution
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The correct option is B1m The time period of a simple pendulum is T=2π√Lg where L is the length of the pendulum. or L=gT24π2 The time period of the simple pendulum which ticks seconds is 2s. ∴T=2s Substituting in (i), we get
L=(9.8ms−2)(2s)24×(3.14)2=1m
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