The ratio of thermal conductivity of two rods of different materials is "5:4. The two rods of same area and same thermal resistance will have lengths in the ratio :-

The ratio of thermal conductivity of two rods of different material is 5 : 4 . The two rods of same area of cross-section and same thermal resistance will have the lengths in the ratio

The thermal conductivity of a rod depends on

The ratio of thermal conductivites of two different metals is 5:3 . In order to have the same thermal resistance in these metals of equal thickness what should be the ratio of their length?

The ratio of the coefficient of thermal conductivity of two different materials is 5 : 3 . If the thermal resistance of the rod of same thickness resistance of the rods of same thickness of these materials is same, then the ratio of the length of these rods will be

The thermal conductivity of a rod is 2. What is its thermal-resistivity ?

The thermal conductivity of two materials are in the ratio 1 : 2. What will be the ratio of thermal resistances of rods of these materials having length in the ratio 1 :2 and area of cross-section in the ratio 1:2 :

The ratio of the areas of cross section of two rods of different materials is 1:2 and the ratio of ther themal conductivities of their mateirals is 4: 3. On keeping equal temperature difference between the ends of theserods, the rate of conduction of heat are equal. The ratio of the lengths of the rods is

Assertion : Greater is 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.

Assertion : If thermal conductivity of a rod is 5 , then its thermal resistively is 0.2 Reason : Thermal conductivity = (1)/("thermal resistivity")