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MHT CET 2025 (25 Apr, Shift 2) · Errors in Measurement

Errors in Measurement question from MHT CET 2025 (25 Apr, Shift 2)

Q47MHT CET 2025 · 25 APR · SHIFT 2Medium

Errors in Measurement

A force F is applied on a square plate of side L. If the percentage error in determining F is $3\%$ and that in L is $2\%$ , then the percentage error in determining the pressure is

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Answer: (a)

Pressure $P = \frac{F}{L^2}$ , so $\frac{\Delta P}{P} = \frac{\Delta F}{F} + 2\frac{\Delta L}{L}$
$= 3\% + 2(2\%) = 7\%$
So the answer is (a) $7\%$ .

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