A clock , with a brass pendulum, keeps c...

A clock , with a brass pendulum, keeps correct time at `20^(@)C`, but loses `8.212` s per day , when the temperature rises to `30^(@)C`. Calculate the coefficient of linear expansion of brass.

`25xx10^(-6)//""^(@)C`

`19xx10^(-6)//""^(@)C`

`20xx10^(-6)//""^(@)C`

`11xx10^(-6)//""^(@)C`

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AAKASH SERIES-THERMAL PROPERTIES OF MATTER-EXERCISE-2

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