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Q.

In measuring the diameter of a drop of liquid the error is 1% and in measuring the surface tension of the liquid, the error is 2% . Then the maximum possible error in calculating surface energy of the drop will be

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answer is 3.

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Detailed Solution

E = surface energy = 4πr2T∴∆EE x 100% =2∆rr%+∆TT%= 2 x 1%+2% = 4%
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