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A pendulum clock (fitted with a small heavy bob that is connected with a metal rod) is 5 seconds fast each day at a temperature of and 10 seconds slow at a temperature of . The temperature at which it is designed to give correct time, is
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Correct option is B
12α(T0−15)×24hr=5...........(i)12α(30−T0)×24hr=10..........(ii)Solving equations (i) and (ii), we get T0=200C
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A rotating solid metal sphere is heated by . If then percentage change in its moment of inertia is
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