A pendulum clock keeps correct time at `0^(@)C`. Its mean coefficient of linear expansions is `alpha//.^(@)C`, then the loss in seconds per day by the clock if the temperature rises by `t^(@)C` is

Options

A. `((1)/(2)alpha txx864000)/(1-(alpha t)/(2))`
B. `(1)/(2)alpha txx86400`
C. `((1)/(2)alpha t xx86400)/((1-(alpha t)/(2))^(2))`
D. `((1)/(2)alpha t xx86400)/(1+(alpha t)/(2))`

Answer

B