A clock with an iron pendulum keeps correct time at `15^(@)C`. If the room temperature rises to `20^(@)C`, the error in sconds p

A clock with an iron pendulum keeps correct time at `15^(@)C`. If the room temperature rises to `20^(@)C`, the error in sconds per day will be (coefficient of linear expansion for iron is `0.000012//^(@)C)`
A. `2.5sec`
B. `2.6sec`
C. `2.4sec`
D. `2.2sec`

A clock with an iron pendulum keeps correct time at `15^(@)C`. If the room temperature rises to `20^(@)C`, the error in sconds per day will be (coeffi

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