Answer:
Option B
Explanation:
Given,
Percentage error in length =3%
Percentage error in force=4%
We know that,
Pressure= $P= \frac{F}{A}$
Area of square = $(L))^{2}$
$P= \frac{F}{L^{2}}$
$\frac{\triangle P}{p}=\frac{\triangle F}{F}+\frac{2\triangle L}{L}$
$\left(\frac{\triangle P}{p} \times 100\right)=\left(\frac{\triangle F}{F} \times 100\right)+2\left(\frac{\triangle L}{L} \times 100\right)$
= 4%+2(3%)=10%
