141002 A steel wire of length $1.5 \mathrm{~m}$ and $3.0 \mathrm{~mm}^{2}$ crosssection area at $30^{\circ} \mathrm{C}$ is held straight (but under no tension) by attaching the ends to two walls. The coefficient of linear expansion for the wire is $1.0 \times 10^{-5} /{ }^{\circ} \mathrm{C}$ and Young's modulus is $2 \times$ $10^{11} \mathrm{~N} / \mathrm{m}^{2}$. It the temperature of the wire is decreased to $-10^{\circ} \mathrm{C}$, the total tension in the wire will change by

141003 Two wires of equal length and equal cross sectional areas are suspended as shown in the figure. Their Young's modulii are $Y_{1}$ and $Y_{2}$, respectively. The equivalent Young's modulus is

141004 The following four wires are made of the same material. If same tension is applied to each, the wire having largest extension is

141005 A one metre steel wire of negligible mass and area of cross-section $0.01 \mathrm{~cm}^{2}$ is kept on a smooth horizontal table with one end fixed. A ball of mass $1 \mathrm{~kg}$ is attached to the other end. The ball and the wire are rotating with an angular velocity of $\omega$. If the elongation of the wire is $2 \mathrm{~mm}$, then $\omega$ is
(Young's modulus of steel $=2 \times 10^{11} \mathrm{Nm}^{-2}$ )

141006 A solid copper cube of $7 \mathrm{~cm}$ edge is subjected to a hydraulic pressure of $8000 \mathrm{kPa}$. The volume contraction of the copper cube is (Bulk modulus of copper $=140 \mathrm{GPa})$

141002 A steel wire of length $1.5 \mathrm{~m}$ and $3.0 \mathrm{~mm}^{2}$ crosssection area at $30^{\circ} \mathrm{C}$ is held straight (but under no tension) by attaching the ends to two walls. The coefficient of linear expansion for the wire is $1.0 \times 10^{-5} /{ }^{\circ} \mathrm{C}$ and Young's modulus is $2 \times$ $10^{11} \mathrm{~N} / \mathrm{m}^{2}$. It the temperature of the wire is decreased to $-10^{\circ} \mathrm{C}$, the total tension in the wire will change by

141003 Two wires of equal length and equal cross sectional areas are suspended as shown in the figure. Their Young's modulii are $Y_{1}$ and $Y_{2}$, respectively. The equivalent Young's modulus is

141004 The following four wires are made of the same material. If same tension is applied to each, the wire having largest extension is

141005 A one metre steel wire of negligible mass and area of cross-section $0.01 \mathrm{~cm}^{2}$ is kept on a smooth horizontal table with one end fixed. A ball of mass $1 \mathrm{~kg}$ is attached to the other end. The ball and the wire are rotating with an angular velocity of $\omega$. If the elongation of the wire is $2 \mathrm{~mm}$, then $\omega$ is
(Young's modulus of steel $=2 \times 10^{11} \mathrm{Nm}^{-2}$ )

141006 A solid copper cube of $7 \mathrm{~cm}$ edge is subjected to a hydraulic pressure of $8000 \mathrm{kPa}$. The volume contraction of the copper cube is (Bulk modulus of copper $=140 \mathrm{GPa})$

141002 A steel wire of length $1.5 \mathrm{~m}$ and $3.0 \mathrm{~mm}^{2}$ crosssection area at $30^{\circ} \mathrm{C}$ is held straight (but under no tension) by attaching the ends to two walls. The coefficient of linear expansion for the wire is $1.0 \times 10^{-5} /{ }^{\circ} \mathrm{C}$ and Young's modulus is $2 \times$ $10^{11} \mathrm{~N} / \mathrm{m}^{2}$. It the temperature of the wire is decreased to $-10^{\circ} \mathrm{C}$, the total tension in the wire will change by

141003 Two wires of equal length and equal cross sectional areas are suspended as shown in the figure. Their Young's modulii are $Y_{1}$ and $Y_{2}$, respectively. The equivalent Young's modulus is

141004 The following four wires are made of the same material. If same tension is applied to each, the wire having largest extension is

141005 A one metre steel wire of negligible mass and area of cross-section $0.01 \mathrm{~cm}^{2}$ is kept on a smooth horizontal table with one end fixed. A ball of mass $1 \mathrm{~kg}$ is attached to the other end. The ball and the wire are rotating with an angular velocity of $\omega$. If the elongation of the wire is $2 \mathrm{~mm}$, then $\omega$ is
(Young's modulus of steel $=2 \times 10^{11} \mathrm{Nm}^{-2}$ )

141006 A solid copper cube of $7 \mathrm{~cm}$ edge is subjected to a hydraulic pressure of $8000 \mathrm{kPa}$. The volume contraction of the copper cube is (Bulk modulus of copper $=140 \mathrm{GPa})$

141002 A steel wire of length $1.5 \mathrm{~m}$ and $3.0 \mathrm{~mm}^{2}$ crosssection area at $30^{\circ} \mathrm{C}$ is held straight (but under no tension) by attaching the ends to two walls. The coefficient of linear expansion for the wire is $1.0 \times 10^{-5} /{ }^{\circ} \mathrm{C}$ and Young's modulus is $2 \times$ $10^{11} \mathrm{~N} / \mathrm{m}^{2}$. It the temperature of the wire is decreased to $-10^{\circ} \mathrm{C}$, the total tension in the wire will change by

141003 Two wires of equal length and equal cross sectional areas are suspended as shown in the figure. Their Young's modulii are $Y_{1}$ and $Y_{2}$, respectively. The equivalent Young's modulus is

141004 The following four wires are made of the same material. If same tension is applied to each, the wire having largest extension is

141005 A one metre steel wire of negligible mass and area of cross-section $0.01 \mathrm{~cm}^{2}$ is kept on a smooth horizontal table with one end fixed. A ball of mass $1 \mathrm{~kg}$ is attached to the other end. The ball and the wire are rotating with an angular velocity of $\omega$. If the elongation of the wire is $2 \mathrm{~mm}$, then $\omega$ is
(Young's modulus of steel $=2 \times 10^{11} \mathrm{Nm}^{-2}$ )

141006 A solid copper cube of $7 \mathrm{~cm}$ edge is subjected to a hydraulic pressure of $8000 \mathrm{kPa}$. The volume contraction of the copper cube is (Bulk modulus of copper $=140 \mathrm{GPa})$

141002 A steel wire of length $1.5 \mathrm{~m}$ and $3.0 \mathrm{~mm}^{2}$ crosssection area at $30^{\circ} \mathrm{C}$ is held straight (but under no tension) by attaching the ends to two walls. The coefficient of linear expansion for the wire is $1.0 \times 10^{-5} /{ }^{\circ} \mathrm{C}$ and Young's modulus is $2 \times$ $10^{11} \mathrm{~N} / \mathrm{m}^{2}$. It the temperature of the wire is decreased to $-10^{\circ} \mathrm{C}$, the total tension in the wire will change by

141003 Two wires of equal length and equal cross sectional areas are suspended as shown in the figure. Their Young's modulii are $Y_{1}$ and $Y_{2}$, respectively. The equivalent Young's modulus is

141004 The following four wires are made of the same material. If same tension is applied to each, the wire having largest extension is

141005 A one metre steel wire of negligible mass and area of cross-section $0.01 \mathrm{~cm}^{2}$ is kept on a smooth horizontal table with one end fixed. A ball of mass $1 \mathrm{~kg}$ is attached to the other end. The ball and the wire are rotating with an angular velocity of $\omega$. If the elongation of the wire is $2 \mathrm{~mm}$, then $\omega$ is
(Young's modulus of steel $=2 \times 10^{11} \mathrm{Nm}^{-2}$ )

141006 A solid copper cube of $7 \mathrm{~cm}$ edge is subjected to a hydraulic pressure of $8000 \mathrm{kPa}$. The volume contraction of the copper cube is (Bulk modulus of copper $=140 \mathrm{GPa})$