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CBSE Class 11-science Answered

The length of of a rod as measured an experiment was found to be 2.48m, 2.46m, 2.49m, and 2.48m. Find the average length, absolute error in each obervation and the percentage error.
Asked by mirnalsinha770 | 07 Jul, 2019, 11:15: PM
answered-by-expert Expert Answer
average length of rod = (2.48+2.46+2.49+2.48)/4 = 2.4775 ≈ 2.48 m
 
absolute error in measurement 2.48 m =  0 m ;  percentage error in measurement 2.48 m = 0%
 
absolute error in measurement 2.46 m =  0.02 m ;  percentage error in measurement 2.46 m = (0.02/2.48)×100 = 0.8 %
 
absolute error in measurement 2.49 m =  0.03 m ;  percentage error in measurement  2.49 m = (0.03/2.48)×100 = 1.21 %
Answered by Thiyagarajan K | 08 Jul, 2019, 10:12: AM
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