The ends of rods made of the same material are kept at the same temperatures

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

The ends of rods made of the same material are kept at the same temperatures. Which of the following rods conducts the maximum heat per unit time? (1) L=50 cm, R=1 cmL=50\,\mathrm{cm},\ R=1\,\mathrm{cm} (2) L=100 cm, R=2 cmL=100\,\mathrm{cm},\ R=2\,\mathrm{cm} (3) L=25 cm, R=0.5 cmL=25\,\mathrm{cm},\ R=0.5\,\mathrm{cm} (4) L=75 cm, R=1.5 cmL=75\,\mathrm{cm},\ R=1.5\,\mathrm{cm}

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