Question

A pendulum clock loses 12 s a day if the temperature is $40^\circ C$ and gains 4 s in a day if the temperature is $20^\circ C$. The temperature at which the clock will show correct time, and the coefficient of linear expansion $\left( \alpha \right)$ of the metal of the pendulum shaft are, respectively

Accepted Answer

$25^\circ C,\,\,\alpha = 1.85 	imes {10^{ - 5}}/^\circ C$

Answer

$60^\circ C,\,\,\alpha = 1.85 	imes {10^{ - 4}}/^\circ C$

Answer

$30^\circ C,\,\,\alpha = 1.85 	imes {10^{ - 3}}/^\circ C$

Answer

$55^\circ C,\,\,\alpha = 1.85 	imes {10^{ - 2}}/^\circ C$

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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