A pendulum clock loses 10.8 seconds a day when the temperature is 38^{\circ} {\C} and gains 10.8 seconds a day when the temperature is 18^{\circ} {\C}. The coefficient of linear expansion of the metal of the pendulum clock is [TG EAPCET 11 May 2024 Shift 1]

Correct Answer is : 2.5×10−5∘C−1

7 \times 10^{-5}{ }^{\circ} {\C}^{-1}

1.25 \times 10^{-5}{ }^{\circ} {\C}^{-1}

5 \times 10^{-5}{ }^{\circ} {\C}^{-1}

2.5 \times 10^{-5}{ }^{\circ} {\C}^{-1}

Heat and Thermodynamics

Section: Physics

Question : 4 of 21

Marks: +1, -0

A pendulum clock loses 10.8 seconds a day when the temperature is 38∘C and gains 10.8 seconds a day when the temperature is 18∘C. The coefficient of linear expansion of the metal of the pendulum clock is

[TG EAPCET 11 May 2024 Shift 1]

‌7×10−5‌∘C−1
‌1.25×10−5‌∘C−1
‌5×10−5‌∘C−1
‌2.5×10−5‌∘C−1

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