Test Academy | A clock with a metal pendulum beating seconds keeps correct time at 0°C. If it loses 12.5 seconds a day at 25°C, the coefficient of linear expansion of metal of pendulum is 1/86400 per °C, 1/43200 per °C, 1/14400 per °C, 1/28800 per °C

Question

A clock with a metal pendulum beating seconds keeps correct time at 0°C. If it loses 12.5 seconds a day at 25°C, the coefficient of linear expansion of metal of pendulum is

Options :

1/86400 per °C
1/43200 per °C
1/14400 per °C
1/28800 per °C

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