MCQ
Which of the following clocks is most accurate?
- ASimple pendulum
- BStop watch
- ✓Caesium clock
- DHourglass
✓
Answer
Correct option: C.
Caesium clock
Caesium clocks are the most accurate commercially produced time and frequency standards, and serve as the primary standard for the definition of the second in $SI$ system.
Hence, Caesium clock is most accurate clock.
Hence, Caesium clock is most accurate clock.
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