Question

An atomic clock has an accuracy of 1 part is ${10}^{10}$. If two such clocks are operated with precision, then after running for 2500 years they will record a difference of nearly :

• A. 1 sec
• B. 8 sec
• C. 5 sec
• D. ${10}^{8}sec$

Answer 1

The correct option is B 8 sec

Difference after 2500 years $=\frac{2500\times 86400\times 365.25}{{10}^{10}}=7.9s$