| (i) The swing of a pendulum |
| (ii) Pulse rate |
| (iii) The changing of days and nights |
A) Only (i) and (ii)
B) Only (ii) and (iii)
C) Only (i) and (iii)
D) (i), (ii) and (iii)
Correct Answer: D
Solution :
The swing of a pendulum, pulse rate and the changing of days and nights are the events that are used for measurement of time. These events are assumed to be taken under ideal conditions.
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