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Assertion (A) : Quartz clocks are more accurate than pendulum clocks. Resson ( R) : Quartz clocks use periodic motion of simple pendulum for the measurement of time.A. Both A and R are true and R is the correct explanation of A.B. Both A and R are true, but R is not the correct explanation of A.C. A is true but R is falseD. Both A and R are false. |
Answer» Correct Answer - C Quartz clocks contain an electric circuit and are more accurate than pendulum clocks. |
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