Questions
A physical quantity A is related to four observable a, b, c and d as . The percentage errors of measurement in a, b, c and d are 1 %, 3 %, 2 % and 2 % respectively. What is the percentage error in the quantity A ?
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a
12 %
b
7 %
c
5 %
d
14 %
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Correct option is D
Percentage error in A =2×1+3×3+1×2+12×2%=14%Similar Questions
Two resistor and are joined in series. The equivalent resistance is
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