369793 A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If $L,\alpha$ and $Y$ respectively denote the length of the rod, coefficient of linear thermal expansion and Young's modulus of its material, then for an increase in temperature of the rod by $\mathrm{\Delta }T$, the longitudinal stress developed in the rod is

369795 A wire of length $L$ and radius $r$ is rigidly fixed at one end. On stretching the other end of the wire with a force $F$, the increase in length is $l$. If another wire of the same material but double the length and radius is stretched with a force $2F$, then increase in length is

369796 Under the same load, wire $A$ having length $5.0m$ and the cross section $2.5\times {10}^{-5}{m}^2$ stretches uniformly by same amount as another wire $B$ of length $6.0m$ and a cross-section of $3.0\times {10}^{-5}{m}^2$ stretches. The ratio of the Young's modulus of wire $A$ to that of wire $B$ will be

369793 A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If $L,\alpha$ and $Y$ respectively denote the length of the rod, coefficient of linear thermal expansion and Young's modulus of its material, then for an increase in temperature of the rod by $\mathrm{\Delta }T$, the longitudinal stress developed in the rod is

369794 A steel ring of radius $r$ and cross-section area ' $A$ ' is fitted onto a wooden disc of radius $R(R>r)$. IF Young's modulus be E, then the force with which the steel ring is expanded is

369795 A wire of length $L$ and radius $r$ is rigidly fixed at one end. On stretching the other end of the wire with a force $F$, the increase in length is $l$. If another wire of the same material but double the length and radius is stretched with a force $2F$, then increase in length is

369796 Under the same load, wire $A$ having length $5.0m$ and the cross section $2.5\times {10}^{-5}{m}^2$ stretches uniformly by same amount as another wire $B$ of length $6.0m$ and a cross-section of $3.0\times {10}^{-5}{m}^2$ stretches. The ratio of the Young's modulus of wire $A$ to that of wire $B$ will be

369793 A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If $L,\alpha$ and $Y$ respectively denote the length of the rod, coefficient of linear thermal expansion and Young's modulus of its material, then for an increase in temperature of the rod by $\mathrm{\Delta }T$, the longitudinal stress developed in the rod is

369794 A steel ring of radius $r$ and cross-section area ' $A$ ' is fitted onto a wooden disc of radius $R(R>r)$. IF Young's modulus be E, then the force with which the steel ring is expanded is

369795 A wire of length $L$ and radius $r$ is rigidly fixed at one end. On stretching the other end of the wire with a force $F$, the increase in length is $l$. If another wire of the same material but double the length and radius is stretched with a force $2F$, then increase in length is

369796 Under the same load, wire $A$ having length $5.0m$ and the cross section $2.5\times {10}^{-5}{m}^2$ stretches uniformly by same amount as another wire $B$ of length $6.0m$ and a cross-section of $3.0\times {10}^{-5}{m}^2$ stretches. The ratio of the Young's modulus of wire $A$ to that of wire $B$ will be

369793 A metal rod is fixed rigidly at two ends so as to prevent its thermal expansion. If $L,\alpha$ and $Y$ respectively denote the length of the rod, coefficient of linear thermal expansion and Young's modulus of its material, then for an increase in temperature of the rod by $\mathrm{\Delta }T$, the longitudinal stress developed in the rod is

369794 A steel ring of radius $r$ and cross-section area ' $A$ ' is fitted onto a wooden disc of radius $R(R>r)$. IF Young's modulus be E, then the force with which the steel ring is expanded is

369795 A wire of length $L$ and radius $r$ is rigidly fixed at one end. On stretching the other end of the wire with a force $F$, the increase in length is $l$. If another wire of the same material but double the length and radius is stretched with a force $2F$, then increase in length is

369796 Under the same load, wire $A$ having length $5.0m$ and the cross section $2.5\times {10}^{-5}{m}^2$ stretches uniformly by same amount as another wire $B$ of length $6.0m$ and a cross-section of $3.0\times {10}^{-5}{m}^2$ stretches. The ratio of the Young's modulus of wire $A$ to that of wire $B$ will be