The length of the two rods made up of the same metal and having the same area of cross-section are $0.6 m$ and $0.8 m$ respectively. The temperature between the ends of first rod is ${90^o}C$ and ${60^o}C$ and that for the other rod is $150^oC$ and ${110^o}C$. For which rod the rate of conduction will be greater
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(c) $\frac{{{Q_1}}}{t} = \frac{{KA(90 - 60)}}{{0.6}} = 50\;KA$

and $\frac{{{Q_2}}}{t} = \frac{{KA(150 - 110)}}{{0.8}} = 50\;KA$

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