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in Physics by (33.0k points)

It is claimed that two cesium clocks if allowed to run for 100 years, free from any disturbance, may differ by only about 0.02 s. What does this imply for the accuracy of the standard cesium clock in measuring a time – interval of 1 s?

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Since the maximum error possible for 2 clocks is 0.02 s, the error for 1 clock = 0.01 s.

∴ Accuracy = (3600 x 24 x 365 x 100)/0.01

= 3.15 × 1011

= 1 part in to11 to 1012

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