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NEET 1995 (AIPMT) · Errors in Measurement

Errors in Measurement question from NEET 1995 (AIPMT)

Q110NEET 1995 · AIPMTMedium

Errors in Measurement

Percentage errors in the measurement of mass and speed are 2% and 3% respectively. The error in the estimate of kinetic energy obtained by measuring mass and speed will be

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Answer: (a)

$K = \frac{1}{2}mv^2 \Rightarrow \frac{\Delta K}{K} = \frac{\Delta m}{m} + 2\frac{\Delta v}{v}$
$= 2\% + 2(3\%) = 8\%$
So the answer is (a) $8\%$ .

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