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Questions  

A physical quantity is represented by X=MaLbTc. If percentage errors in the measurements of M, L and T are α%, β% and γ% respectively, then total percentage error is

a
(αa+βb−γc)%
b
(αa+βb+γc)%
c
(αa−βb−γc)%
d
0%

detailed solution

Correct option is B

Given, X=MaLbT−c  ∴ ΔXX×100=aΔMM+bΔLL+cΔTT×100=[aα+βb+γc]%

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