Thickness of a pencil measured by using a screw gauge (least count $0.001 \,cm$ ) comes out to be $0.802 \,cm$. The percentage error in the measurement is ........... $\%$
A$0.125$
B$2.43$
C$4.12$
D$2.14$
Easy
Download our app for free and get started
A$0.125$
a (a)
The percentage error is $\frac{\Delta L}{L} \times 100 \%=\frac{0.001}{0.802} \times 100 \%=0.1246 \% \simeq 0.125 \%$
Download our app
and get started for free
Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*
For $z=a^{2} x^{3} y^{\frac{1}{2}}$, where $a$ is a constant. If percentage error in measurement of $x$ and $y$ are $4 \%$ and $12 \%$, respectively, then the percentage error for $z$ will be $%$