The ratio of thermal conductivity of two rods of different materials is `3 : 2`. The two rods of same area of cross section and same thermal resistance will have the lengths in the ratio
A)`3:2`
B)`4:5`
C) `9:4`
D)`16:1`

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 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 thermal conductivities of two different materials is 1 : 2 . The thermal resistance of the rods of these materials having the same thickness are equal. Find the ratio of the length of rods.

Two wires of the same materical having equal area of cross-section have L and 2L. Their respective resistances are in the ratio

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

Two spheres made of same substance have diameters in the ratio 1:2. their thermal capacities are in the ratio of

Ratio of energy density of two steel rods is 1 : 4 when same mass is suspended from the rods. If length of both rods is same then ratio of diameter of rods will be.

The end of two rods of different materials with their thermal conductivities, area of cross-section and lengths all in the ratio 1:2 are maintained at the same temperature difference. If the rate of flow of heat in the first rod is 4 cal//s . Then, in the second rod rate of heat flow in cal//s will be

A slab consists of two layers of different materials of the same thickness and having thermal conductivities K_(1) and K_(2) . The equivalent thermal conductivity of the slab is

Two wires that are made up of two different materials whose specific resistance are in the ratio 2 : 3, length 3 : 4 and area 4 : 5. The ratio of their resistances is