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Two rods R and Q of same metal and same cross-section have length in the ratio 1:2 One end of each rod is at 0^(@)C and temperatures of other are 30^(@)C and 40^(@)C respectively. Which of the rod will have higher flow of heat ? |
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Answer» Rod P `rArrQ_(1)prop(30)/(l)` and `Q_(2)prop(40)/(2l)` `:.(Q_(1))/(Q_(2))=(30)/(40)XX(2l)/(l)=(3)/(2)` `rArrQ_(1)gtQ_(2)`. HENCE correct choice is (a). |
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