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Question

A pendulum clock keeps correct time at 0o C. Its mean coefficient of linear expansions is αo C, then the loss in seconds per day by the clock if the temperature rises by to C is 


A

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B

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C

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D

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Solution

The correct option is B


Loss in time per second TT=12αθ=12α(t0)
loss in time per day
t=(12αt)t=12αt×(24×60×60)=12αt×86400

Physics

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