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+1 vote
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in JEE by (20 points)

A uniform metal is used as a bar pendulum.If the room temperature rises by 10 degrees Celsius,and the coefficient of linear expansion of metal of rod is 2×10-6 per Celsius,the period of pendulum will have percentage increase of?

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1 Answer

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by (1.9k points)

Fractional change in period =>
ΔTT=12αΔθ=12×2×10−6×10=10−5.
the period of the pendulum will have percentage increase of=>

% change=ΔTT×100=10−5×100=10−3

 

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