Q. There are atomic clocks capable of measuring time with an accuracy of 1 part in $10^{11}$. If two such clocks are operated with precision, then after running for 5000 years, these will record
A) A difference of nearly 1 s
B) A difference of 1 day
C) A difference of $10^{11}$ s
D) A difference of 1 year
Explanation
Required time $= \frac{5000 \times 86400 \times 365.25}{10^{11}}s = 1.6s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.