Radius of a conductor increases uniformly from left end to right end as shown in fig.

Material of the conductor is isotropic and its curved surface is thermally isolated from surrounding. Its ends are maintained at temperatures `T_(1)` and `T_(2) ( T_(1) gt T_(2))`: If, in steady state, heat flow rate is equal to H , then which of the following graphs is correct

Curved surface of a uniform rod is isolated from surrounding. Ends of the rod are maintained at temperatures T_(1) and T_(2)(T_(1)>T_(2)) for a long time. At an instant, temperature T_(1) starts to decrease at a constant and slow rate. If thermal capacity of material of the rod is considered, then which of thefollowing statements is/are correct ?

Shown below are the black body radiation curves at temperature T_(1) and T_(2) (T_(2) gt T_(1)) . Which of the following plots is correct?

Shown below are the black body radiation curves at temperature T_(1) and T_(2) (T_(2) gt T_(1)) . Which of the following plots is correct?

A rod of length L with sides fully insulated is made of a material whose thermal conductivity K varies with temperature as K=(alpha)/(T) where alpha is constant. The ends of rod are at temperature T_(1) and T_(2)(T_(2)gtT_(1)) Find the rate of heat flow per unit area of rod .

A rod of length L with sides fully insulated is made of a material whose thermal conductivity K varies with temperature as K=(alpha)/(T) where alpha is constant. The ends of rod are at temperature T_(1) and T_(2)(T_(2)gtT_(1)) Find the rate of heat flow per unit area of rod .

A rod of length l and cross-section area A has a variable thermal conductivity given by K = alpha T, where alpha is a positive constant and T is temperature in kelvin. Two ends of the rod are maintained at temperature T_(1) and T_(2) (T_(1)gtT_(2)) . Heat current flowing through the rod will be

A rod of length l and cross-section area A has a variable thermal conductivity given by K = alpha T, where alpha is a positive constant and T is temperature in kelvin. Two ends of the rod are maintained at temperature T_(1) and T_(2) (T_(1)gtT_(2)) . Heat current flowing through the rod will be

Consider two rods of equal cross - sectionai area A, one of Aluminium and other of iron joined end to end as shown in figure -4.8. Length of the two rods and their thermal coductivities are l_(1) , k_(1) and l_(2),k_(2) respectively . If the ends of the rods are maintained at temperature T_(1) and T_(2),(T_(1)gt T_(2)) find the temperature of the junction in steady state .

A thin piece of thermal conductor of constant thermal conductivity insulated on the lateral sides connects two reservoirs which are maintained at temperatures T_(1) and T_(2) as shown. Assuming that the system is in steady state, which of the following plots best represents the dependence of the rate of change of entropy of the ratio of temperatures T_(1)//T_(2)

A rod of length l and of a uniform cross-sectional area A is made of a material of non-uniform thermal conductivity. Its thermal conductivity is temperature depenndent and varies as K=(B)/(T) , where B is a constant. If ends of the rod are maintained at constant temperatures T_(1) and T_(2) with T_(1)gt T_(2) , rate of flow of heat in steady state will be :