Sun July 29, 2012 By: Manisha

it is an exmple ques from ncert book phy part -1 .. page no.25

Expert Reply
Sun July 29, 2012
In the experiment we measure the time at 12 o' clock each noon.
So the variations in time of each clock from the standard time of 12:00:00 is calculated.
We find that the maximum variation in clock 1 is 162 second and in clock 2 is 31 second
Even though the average time of clock one is more closer to the actual time of 12:00:00,
but the variation in time interval is more in clock 1 as compared to clock 2.
It means clock 2 is more accurate in maintaining the time intervals as compared to clock 1.
Clock 2 has a zero error. i.e. its time has an error of a constant quantity which can anytime be compensated to give
good and more accurate results
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