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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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A physical quantity is measured as Q = (2.1 ± 0.5) units. Calculate the percentage error in (1) Q2 (2) 2Q.

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A Physical quantity is,

P = Q2 

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