00:05Question number 8 of unit 1 is, a watch factory claims that its watches gain or lose not more
00:16than 10 seconds in a year.
00:18How accurate is this watch? Express is percentage. So, we will create the data, uncertainty in time, delta t is
00:40given which is 10 seconds.
00:47Time is also given which is 1 year is, 1 year is equal to 365 x 24 x 60 x
01:0960
01:14So, time will be obtained as 3153
01:34We have to find percent uncertainty.
01:51So, for solution
01:58So, the solution is, percent uncertainty
02:10will be equal to delta t upon t into 100 percent. So, percent uncertainty will be 10 divided by 3153.
02:316 triple 0 multiplied with 100 percent. So, after simplification, we will get the final answer for percent uncertainty
02:53is 3.17 x 10 raised to the power minus 5 percent. So, this is our final answer.
03:08So, for solution, this is our final answer.
03:09Set a new answer.
03:09Set a new answer.
03:09Set a new answer.
03:10Set a new answer.
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