Q8. To measure time we can use
The regularity of the oscillation of a quartz crystal. Periodic oscillation of a pendulum
The regularity of the earth's rotation about its own a
All of above
Answers
Answered by
2
Answer:
Explanation:
OPTION 1 IS CORRECT
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Answered by
0
Answer:
(A) is correct because
only the regularity of the oscillations
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