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A physical quantity is measured as Q = (2.1 ± 0.5) units. Calculate the percentage error in (1) Q^(2) (2) 2Q. |
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Answer» Solution :`P=Q^(2)` `(Deltap)/(p)=(2DeltaQ)/(Q)=2((0.5)/(2.1))=(1.0)/(2.1)=0.476` `(Deltap)/(p)xx100%=47.6%=48%` `R=2Q` `(DeltaR)/(R)=(DeltaQ)/(Q)implies(0.5)/(2.1)=0.238` `(DeltaR)/(R)xx100%=24%` |
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