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A force F is applied on a square plate of side L. If the percentage error in the determination of L is 2% and that in F is 4%. What is the permissible error in pressure?
A. 0.08
B. 0.06
C. 0.04
D. 0.02

1 Answer

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Best answer
Correct Answer - A
`p=(F)/(A)=(F)/(L^(2))=FL^(-2)`
% error in pressure =(% error in `F`) + 2(error in `L`)
=(4%)+2(2%)=8%

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