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The ratio of thermal consuctivities of two rods is 5:3. If the thermal resistances of the two rods of same lengths of the rod is : |
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Answer» `5/3` Here `R_(1)=R_(2)""rArr""(l_(1))/(k_(1)A_(1))=(l_(2))/(k_(1)A_(2))`. As thickness is same `A_(1)=A_(2)`. `:.(l_(1))/(l_(2))=(k_(1))/(k_(2))=5//3` THUS CORRECT choice is (a). |
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