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  • A pendulum clock keeps correct time at  has a pendulum rod made of brass. How ma

A pendulum clock keeps correct time at 20 ^{0}\textrm{C}  has a pendulum rod made of brass. How many seconds will it gain or lose per day when the temperature falls too 0 ^{0}\textrm{C}(\alpha = 18\times 10^{-6}/_^{0}\textrm{C})

Option: 1 155.5

Option: 2 15.55

Option: 3 25.55

Option: 4 18.55

Answers (1)

best_answer

As per we learned

 

Loss of time in a time period -

\Delta T=\frac{1}{2}\;\alpha\; \Delta\; \theta\; T

\Delta T=\frac{1}{2}\;\alpha\; \Delta\; \theta\ (86400)

- wherein

Where T represents total number of second in a day

T = 86,400 sec

 

 

\frac{\Delta T}{T}=\frac{1}{2}\alpha \Delta \theta

 

or \Delta T=\frac{1}{2}\times 18\times 10^{-6}\times 20\times 86400

18\times \cdot 864

15\cdot 552 sec

Posted by

avinash.dongre

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