141007 A copper wire of cross-sectional area $0.01 \mathrm{~cm}^{2}$ is under a tension of $22 \mathrm{~N}$. The decrease in the cross-sectional area is
$\left(\right.$ Young modulus $=1.1 \times 10^{11} \mathrm{Nm}^{-2}$, Poisson's ratio $=\mathbf{0 . 3 2}$ )

141009 The inter atomic distance for a metal is $3 \times 10^{-10}$ $\mathrm{m}$. If the inter atomic force constant is $3.6 \times 10^{-9}$ $\mathrm{N} \AA^{-1}$, then the Young's modulus (in $\mathrm{Nm}^{-2}$ ) will be

141010 The stress along the length of a rod (with rectangular cross-section) is $1 \%$ of the Young's modulus of its material. What is the approximate percentage of change of its volume? (Poisson's ratio of the material of the $\operatorname{rod}$ is 0.3$)$.

141011 The rubber cord of a catapult has a crosssectional area $1 \mathrm{~mm}^{2}$ and unstretched length 10 $\mathrm{cm}$. If it is stretched to a length $12 \mathrm{~cm}$ and a body of mass $5 \mathrm{~g}$ is projected from it, then the velocity of projection of the body is
(Young's modulus of rubber $=5 \times 10^{8} \mathrm{Nm}^{-2}$ )

141007 A copper wire of cross-sectional area $0.01 \mathrm{~cm}^{2}$ is under a tension of $22 \mathrm{~N}$. The decrease in the cross-sectional area is
$\left(\right.$ Young modulus $=1.1 \times 10^{11} \mathrm{Nm}^{-2}$, Poisson's ratio $=\mathbf{0 . 3 2}$ )

141009 The inter atomic distance for a metal is $3 \times 10^{-10}$ $\mathrm{m}$. If the inter atomic force constant is $3.6 \times 10^{-9}$ $\mathrm{N} \AA^{-1}$, then the Young's modulus (in $\mathrm{Nm}^{-2}$ ) will be

141010 The stress along the length of a rod (with rectangular cross-section) is $1 \%$ of the Young's modulus of its material. What is the approximate percentage of change of its volume? (Poisson's ratio of the material of the $\operatorname{rod}$ is 0.3$)$.

141011 The rubber cord of a catapult has a crosssectional area $1 \mathrm{~mm}^{2}$ and unstretched length 10 $\mathrm{cm}$. If it is stretched to a length $12 \mathrm{~cm}$ and a body of mass $5 \mathrm{~g}$ is projected from it, then the velocity of projection of the body is
(Young's modulus of rubber $=5 \times 10^{8} \mathrm{Nm}^{-2}$ )

141007 A copper wire of cross-sectional area $0.01 \mathrm{~cm}^{2}$ is under a tension of $22 \mathrm{~N}$. The decrease in the cross-sectional area is
$\left(\right.$ Young modulus $=1.1 \times 10^{11} \mathrm{Nm}^{-2}$, Poisson's ratio $=\mathbf{0 . 3 2}$ )

141009 The inter atomic distance for a metal is $3 \times 10^{-10}$ $\mathrm{m}$. If the inter atomic force constant is $3.6 \times 10^{-9}$ $\mathrm{N} \AA^{-1}$, then the Young's modulus (in $\mathrm{Nm}^{-2}$ ) will be

141010 The stress along the length of a rod (with rectangular cross-section) is $1 \%$ of the Young's modulus of its material. What is the approximate percentage of change of its volume? (Poisson's ratio of the material of the $\operatorname{rod}$ is 0.3$)$.

141011 The rubber cord of a catapult has a crosssectional area $1 \mathrm{~mm}^{2}$ and unstretched length 10 $\mathrm{cm}$. If it is stretched to a length $12 \mathrm{~cm}$ and a body of mass $5 \mathrm{~g}$ is projected from it, then the velocity of projection of the body is
(Young's modulus of rubber $=5 \times 10^{8} \mathrm{Nm}^{-2}$ )

141007 A copper wire of cross-sectional area $0.01 \mathrm{~cm}^{2}$ is under a tension of $22 \mathrm{~N}$. The decrease in the cross-sectional area is
$\left(\right.$ Young modulus $=1.1 \times 10^{11} \mathrm{Nm}^{-2}$, Poisson's ratio $=\mathbf{0 . 3 2}$ )

141009 The inter atomic distance for a metal is $3 \times 10^{-10}$ $\mathrm{m}$. If the inter atomic force constant is $3.6 \times 10^{-9}$ $\mathrm{N} \AA^{-1}$, then the Young's modulus (in $\mathrm{Nm}^{-2}$ ) will be

141010 The stress along the length of a rod (with rectangular cross-section) is $1 \%$ of the Young's modulus of its material. What is the approximate percentage of change of its volume? (Poisson's ratio of the material of the $\operatorname{rod}$ is 0.3$)$.

141011 The rubber cord of a catapult has a crosssectional area $1 \mathrm{~mm}^{2}$ and unstretched length 10 $\mathrm{cm}$. If it is stretched to a length $12 \mathrm{~cm}$ and a body of mass $5 \mathrm{~g}$ is projected from it, then the velocity of projection of the body is
(Young's modulus of rubber $=5 \times 10^{8} \mathrm{Nm}^{-2}$ )