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Question Practice

How is the second defined in the SI system?

Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.

MCQ_SA
CBSE
Class 11
Physics
Physics Part - I
UNITS AND MEASUREMENTS
Question Bank

How is the second defined in t...

Single Answer MCQ
Q-00056831

How is the second defined in the SI system?

1

Based on the rotation of the Earth

2

Based on the heartbeat of a human

3

Based on the caesium atomic clock

4

Based on solar time

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