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(D) Pressure $P$ is defined as the force $F$ divided by the area $A$. For a square plate of side length $L$,the area is $A = L^2$. Thus,$P = \frac{F}{

Vedclass · Accepted Answer

$8$

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(D) Pressure $P$ is defined as the force $F$ divided by the area $A$. For a square plate of side length $L$,the area is $A = L^2$. Thus,$P = \frac{F}{L^2}$.Using the theory of propagation of errors,the relative error in $P$ is given by $\frac{\Delta P}{P} = \frac{\Delta F}{F} + 2 \frac{\Delta L}{L}$.Given that the percentage error in force $\frac{\Delta F}{F} 	imes 100 = 4 \%$ and the percentage error in length $\frac{\Delta L}{L} 	imes 100 = 2 \%$.Substituting these values,the percentage error in pressure is $\frac{\Delta P}{P} 	imes 100 = 4 \% + 2(2 \%) = 4 \% + 4 \% = 8 \%$.

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