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Questions  

A seconds pendulum is shifted from a place where g = 9.8 m/s2 to another place where g = 9.82 m/s2. To keep period of oscillation constant its length should be

a
decreased by 2π2 cm
b
increased by 2π2 cm
c
increased by 2πcm
d
decreased by 2πcm

detailed solution

Correct option is B

Δℓ=Δgπ2

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