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Indrani Sandhu
Asked: 2022-11-07T07:19:25+05:30 In:

A clock with an iron pendulum keeps correct time at `20^(@)C`. How much time will it lose or gain in a day if the temperature changes to `40^(@)C`. Thermal coefficient of liner expansion `alpha = 0.000012 per^(@)C`.
A. 10.3 second/ day
B. 20.6 seconds / days
C. 5 seconds/ day
D. 20 minutes /day

A clock with an iron pendulum keeps correct time at `20^(@)C`. How much time will it lose or gain in a day if the temperature changes to `40^(@)C`. Thermal coefficient of liner expansion `alpha = 0.000012 per^(@)C`.
A. 10.3 second/ day
B. 20.6 seconds / days
C. 5 seconds/ day
D. 20 minutes /day
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  1. Correct Answer – A

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Vijayent Babu
Asked: 2022-11-03T12:16:55+05:30 In:

A clock with an iron pendulum keeps correct time at `20^(@)C`. How much time will it lose or gain in a day if the temperature changes to `40^(@)C`. Thermal coefficient of liner expansion `alpha = 0.000012 per^(@)C`.
A. `10.3`s/day
B. 19s/day
C. `5.5`s/day
D. `6.8`s/day

A clock with an iron pendulum keeps correct time at `20^(@)C`. How much time will it lose or gain in a day if the temperature changes to `40^(@)C`. Thermal coefficient of liner expansion `alpha = 0.000012 per^(@)C`.
A. `10.3`s/day
B. 19s/day
C. `5.5`s/day
D. `6.8`s/day
Parabola
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1 Answer

  1. Correct Answer – A
    `(Deltat)/(t)=(1)/(2)(DeltaL)/(2)=(1)/(2)alphaDeltatheta`
    `=(1)/(2)xx12xx10^(-6)xx(40^(@)-20^(@))=12xx10^(-5)`
    `Deltat=txx12xx10^(-5)=86400xx12xx10^(-5)=10.3s//day`

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