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Question

The dimensional formula for a physical quantity x is [M1L3T2]. The errors in measuring the quantities M,L and T respectively are 2%,3% and 4%. The maximum percentage of error that occurs in measuring the quantity x is

A
9
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B
10
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C
14
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D
19
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Solution

The correct option is B 19
X=m3Kgs2=L3mT2
Δxx×100=Δmm+3ΔLL+2ΔTT
Percentage error =[2+3(3)+2(4)]%
Percentage error =19%

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