A pendulum clock having copper rod keeos correct time at `20^0 C`. It – InterviewSolution

InterviewSolution

1.	A pendulum clock having copper rod keeos correct time at `20^0 C`. It gains 15 seconds per day if cooled to `0^@C`. Calculate the coefficient of linear expansion of copper.
Answer» `(15)/(24 xx 60 xx 60) = (1)/(2) alpha xx 20` `rArr alpha = (1)/(16 xx 3600) = 1.7 xx 10^(-5)//.^(@)C`

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