A physical quantity x is calculated from x=ab2/c.Calculate the maximum percentage error in measuring x when the percentage errors in measuring a, b, and c are 4, 2, and 3%, respectively.
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a
7%
b
9%
c
11%
d
9.5%
answer is D.
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Detailed Solution
Here Δxx×100=Δaa×100+2Δbb×100+12Δcc×100=[4+2×2+1/2×3]%=9.5%
A physical quantity x is calculated from x=ab2/c.Calculate the maximum percentage error in measuring x when the percentage errors in measuring a, b, and c are 4, 2, and 3%, respectively.