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A clock while keeps correct time at 30 degrees C has a pendulum rod made of brass. The number of seconds gain or losses per second when the temperature falls to 10degee c
The formula is ½ x alpha x change in temperature .So the constant for brass is 19 x 10 to the power -6 (THAT IS ALPHA)When we calculate the whole thing we get answer as 19 x 10 to the power -5
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