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Q.

A physical quantity P is related to four measurable quantities as P=a3b2c3d4 If the errors in measurement of a, b, c, d are 0.1%, 0.2%, 0.3%, 0.1% respectively, what is the maximum percentage error in measurement of P.

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a

1%

b

2%

c

3%

d

4%

answer is B.

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Detailed Solution

100×ΔPD=3×0.1+2×0.2+3×0.3+4×0.1 =.3+.4+.9+.4=2%
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