The accuracy in the measurement of time for 20 oscillations of a pendulum for the following measurements, t 1 = 39.6 s, t 2 = 39. 9 s and t 3 = 39 .5 s, is
Text Solution
Verified by ExpertsA
±0. 2 s
Given, t 1 = 39.6 s
t 2 = 39.9 s
t 3 = 39.5s
Least count of measuring instrument = 0.1 s
[As measurements have only one decimal place] Precision in the measurement = Least count of the measuring instrument = 0.1 s Mean value of time for 20 oscillations
Absolute errors in the measurements
t 1 = t – t 1 = 39.7 - 39.6 = 0.1s
t 2 =t-t 2 = 39.7 - 39.9 = -0.2s
t 3 = t - t 3 = 39.7 - 39.5 = 0.2s
Mean absolute error 
(rounding-offupto one decimal place).
Accuracy of measurement = ±0.2 s
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems