A wire of area of cross-section ${10^{ - 6}}{m^2}$ is increased in length by $0.1\%$. The tension produced is $1000 N$. The Young's modulus of wire is
${10^{12}}\,N/{m^2}$
${10^{11}}\,N/{m^2}$
${10^{10}}\,N/{m^2}$
${10^9}\,N/{m^2}$
A beam of metal supported at the two ends is loaded at the centre. The depression at the centre is proportional to
An area of cross-section of rubber string is $2\,c{m^2}$. Its length is doubled when stretched with a linear force of $2 \times {10^5}$dynes. The Young's modulus of the rubber in $dyne/c{m^2}$ will be
The force constant of a wire does not depend on
In suspended type moving coil galvanometer, quartz suspension is used because
Two similar wires under the same load yield elongation of $0.1$ $mm$ and $0.05$ $mm$ respectively. If the area of cross- section of the first wire is $4m{m^2},$ then the area of cross section of the second wire is..... $mm^2$