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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.

A

`25 xx 10^(-6) //^(@) C`

B

`19 xx 10^(-6)//^(@) C`

C

`20 xx 20^(-6) //^(@) C`

D

`11 xx 10^(-6) //^(@)`.

Text Solution

Verified by Experts

The correct Answer is:
B
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