# A rod of length L at room temperature and uniform area of cross section.  A, is made of a metal having coefficient of linear expansion /0C.  It is observed that an external compressive force f, is applied on each of its ends, prevents any change in the length of the rod.  When its temperature rises by T K, young’s modulus, Y for this metal is: a. b. c. d. ## Question ID - 50043 :- A rod of length L at room temperature and uniform area of cross section.  A, is made of a metal having coefficient of linear expansion /0C.  It is observed that an external compressive force f, is applied on each of its ends, prevents any change in the length of the rod.  When its temperature rises by T K, young’s modulus, Y for this metal is: a. b. c. d. 3537

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A block of mass m, lying on a smooth horizontal surface, is attached to spring (of negligible mass) of spring constant K. The other end of the spring is fixed, as shown in the figure.  The block is initially at rest in its equilibrium position.  If now the block is pulled with a constant force F, the maximum speed at the block is: a. b. c. d.  