A physical quantity is $A = P^2/Q^3.$ The percentage error in measurement of $P$ and $Q$ is $x$ and $y$ respectively. Maximum error in measurement of $A$ is
$2x -3y$
$3x -2y$
$3x + 2y$
$2x + 3y$
The values of a number of quantities are used in a mathematical formula. The quantity that should be most precise and accurate in measurement is the one
Explain uncertainty or error in given measurement by suitable example.
The length, breadth and thickness of a strip are $(10.0 \pm 0.1)\; cm ,(1.00 \pm 0.01) \;cm$ and $(0.100 \pm 0.001)\; cm$ respectively. The most probable error in its volume will be?
A cylindrical wire of mass $(0.4 \pm 0.01)\,g$ has length $(8 \pm 0.04)\,cm$ and radius $(6 \pm 0.03)\,mm$.The maximum error in its density will be $......\,\%$
Zero error of an instrument introduces