An experiment measures quantities x, y, z and then t is calculated from the data as t=xy2z3. If percentage errors in x, y and z are respectively 1 %, 3 %, 2 %, then percentage error in t is
A
10 %
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B
4 %
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C
7 %
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D
13 %
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Solution
The correct option is D 13 %
The given quantity is t=xy2z3
Percentage error in t is given by Δtt×100=1×(Δxx×100)+2(Δyy×100)+3(Δzz×100)