366411 Consider a compound slab consisting of two different material having equal thickness and thermal conductivities \(K\) and \(2K\) respectively. The equivalent thermal conductivity of the slab is

366412 A cylinder of radius \(r\) and of thermal conductivity \(K_{1}\) is surrounded by a cylindrical shell of inner radius \(r\) and outer radius \(2 r\) made of a material of thermal conductivity \(K_{2}\). The effective thermal conductivity of the system is

366413 The ratio of the coefficient of thermal conductivity of two different materials is \(5: 3\). If the thermal resistance of the two rods of these materials of same length is same, then the ratio of the area of these rods will be

366414 Assertion :
Greater the coefficient of thermal conductivity of a material, smaller is the thermal resistance of a rod of that material.
Reason :
Thermal resistance is the ratio of temperature difference between the ends of the conductor and rate of flow of heat.

366411 Consider a compound slab consisting of two different material having equal thickness and thermal conductivities \(K\) and \(2K\) respectively. The equivalent thermal conductivity of the slab is

366412 A cylinder of radius \(r\) and of thermal conductivity \(K_{1}\) is surrounded by a cylindrical shell of inner radius \(r\) and outer radius \(2 r\) made of a material of thermal conductivity \(K_{2}\). The effective thermal conductivity of the system is

366413 The ratio of the coefficient of thermal conductivity of two different materials is \(5: 3\). If the thermal resistance of the two rods of these materials of same length is same, then the ratio of the area of these rods will be

366414 Assertion :
Greater the coefficient of thermal conductivity of a material, smaller is the thermal resistance of a rod of that material.
Reason :
Thermal resistance is the ratio of temperature difference between the ends of the conductor and rate of flow of heat.

366411 Consider a compound slab consisting of two different material having equal thickness and thermal conductivities \(K\) and \(2K\) respectively. The equivalent thermal conductivity of the slab is

366412 A cylinder of radius \(r\) and of thermal conductivity \(K_{1}\) is surrounded by a cylindrical shell of inner radius \(r\) and outer radius \(2 r\) made of a material of thermal conductivity \(K_{2}\). The effective thermal conductivity of the system is

366413 The ratio of the coefficient of thermal conductivity of two different materials is \(5: 3\). If the thermal resistance of the two rods of these materials of same length is same, then the ratio of the area of these rods will be

366414 Assertion :
Greater the coefficient of thermal conductivity of a material, smaller is the thermal resistance of a rod of that material.
Reason :
Thermal resistance is the ratio of temperature difference between the ends of the conductor and rate of flow of heat.

366411 Consider a compound slab consisting of two different material having equal thickness and thermal conductivities \(K\) and \(2K\) respectively. The equivalent thermal conductivity of the slab is

366412 A cylinder of radius \(r\) and of thermal conductivity \(K_{1}\) is surrounded by a cylindrical shell of inner radius \(r\) and outer radius \(2 r\) made of a material of thermal conductivity \(K_{2}\). The effective thermal conductivity of the system is

366413 The ratio of the coefficient of thermal conductivity of two different materials is \(5: 3\). If the thermal resistance of the two rods of these materials of same length is same, then the ratio of the area of these rods will be

366414 Assertion :
Greater the coefficient of thermal conductivity of a material, smaller is the thermal resistance of a rod of that material.
Reason :
Thermal resistance is the ratio of temperature difference between the ends of the conductor and rate of flow of heat.