The state of the rod, in which temperature of each part becomes constant and there is no further absorption of heat anywhere in the rod during propagation of heat is called……….

Assertion: Heat is generated continoulsy in an electric heater but its temperature becomes constant after some time. Reason:- At the stage when heat produced in heater is equal to the heat dissipated to its surrounding the temperature of heater becomes constant.

On heating one end of a rod the temperature of the whole rod will be uniform when .

The ends of a metal rod are kept at temperatures theta_1 and theta_2 with theta_2gttheta_1 . The rate of flow of heat along the rod is directly proportional to

A rod of unifrom cross section is heated at temperature t_(0) at a point which is at n_(1) times if its length (n_(1) lt 1) from its one end in stready state The temperature at this end is t_(1) and at other end is t_(2) Rate of vapourisation of water at either end of the rod is same. The end at which temperature is t_(2) is how much more far away that the other end from the point at which the rod is heated .

Choose the correct statement: (a) During boiling a liquid change in to gaseous state at constant temperaute with absorption of heat energy (b) During solidification a liquid changes in to solid state at constant temperature with release of heat energy

When one end of an iron rod is heated, its other end also becomes hot soon. Name the process by which heat flows in the iron rod

A cylindrical rod of heat capacity 120 J//K in a room temperature 27^(@)C is heated internally by heater of power 250W , The steady state temperature attained by the rod is 37^(@)C . Fin the following: (a) The initial rate of increse in temperature (b) The steady state rate of emission of radiant heat. If the heater is switched off, find (c) The initial rate of decrease is temperature (d) The rate of decrease in temperature of the cylinder when its temperature falls to 31^(@)C and (e) The maximum amount of heat lost by the cylinder

The amount of heat required to change the state of 1 kg of substance at constant temperature is called