The measurement $4.00 imes 10^3$ m has how many significant figures?

The length of a simple pendulum is about 100 cm known to an accuracy of 1 mm. Its period of oscillation is 2s determined by measuring the time for 100 oscillations using a clock of 0.1 s resolution. What is the accuracy in the determined value of g?

The pressure on a square plate is measured by measuring the force on the plate and the length of the sides of the plate. If the maximum error in the measurement of force and length are respectively 4% and 2%, the maximum error in the measurement of pressure is

A student performs an experiment for determination of $g = \frac{{4{\pi ^2}l}}{{{T^2}}}$ and he commits an error of ∆l. For that he takes the time of n oscillations with the stop watch of least count $\Delta$T and he commits a human error of 0.1 sec. For which of the following data, the measurement of g will be most accurate $\Delta l\,\,\Delta T\,\,n\,\,Ampli.of\,oscill$

If the error in the measurement of radius of a sphere is 2%, then the error in the determination of volume of the sphere will be

In the determination of Young’s modulus $\left( {Y = \frac{{4\;MLg}}{{\pi \;\ell {d^2}}}} \right)$ by using Searle’s method, a wire of length L=2m and diameter d=0.5mm is used. For a load M=2.5 kg, an extension $\ell = 0.25mm$ in the length of the wire is observed. Quantities d and $\ell$ are measured using a screw gauge and a micrometer, respectively. They have the same pitch of 0.5 mm. The number of divisions on their circular scale is 100. The contributions to the maximum probable scale is 100. The contributions to the maximum probable error of the Y measurement

If the length of rod A is $\left( {3.25\; \pm 0.01} \right)\;{\rm{cm}}$ and that of B is $\left( {4.19\; \pm 0.01} \right){\rm{\;cm}},$, then the rod B is longer than rod A by

A cube has a side of length $1.2\; imes {10^{ - 2}}\;{\rm{m}}.$ Calculate its volume.

The error in the measurement of the length of a simple pendulum is 0.2 % and the error in the time period is 1%. What is the maximum percentage error in the measurement of physical quantity having the dimensional formula $\left[ {L{T^{ - 2}}} \right]$

The number of significant figures in all the given numbers 25.12, 2009, 4.156 and $1.217 imes {10^{ - 4}}$ is

The radius of a wire is 0.24 mm. Then its area of cross section by taking significant figures into consideration is