Errors in measurementMedium
Question
The following observations were taken for determining surface tension of water by capillary tube method Diameter of capillary D = 1.25 × 10-2 m Rise of water capillary, h = 1.45 × 10-2 m. Taking g = 9.80m/s2 and using the relation T = (rhg/2) × 103 N.m, what is the possible error in surface tension. T -
Options
A.0.16%
B.1.6%
C.16%
D.2.4%
Solution
T = 
× 
× 100
= 0.80 + 0.69 + 0.10 = 1.59 % = 1.6 %
× × 100= 0.80 + 0.69 + 0.10 = 1.59 % = 1.6 %
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