Five rods of the same dimensions are arranged as shown. They have thermal conductivities k1, k2, k3, k4 and k5. When points A and
B are maintained at different temperatures, no heat flows through the central rod. It follows that :
(a) k1 = k4 and k2 = k3
(b) k1/k4 = k2/k3
(c) k1k4 = k2k3
(d) k1k2 = k3k4
pls rewply fast
Five rods of the same dimensions are arranged as shown. They have thermal conductivities k1, k2, k3, k4 and k5. When points A and
B are maintained at different temperatures, no heat flows through the central rod. It follows that :
(a) k1 = k4 and k2 = k3
(b) k1/k4 = k2/k3
(c) k1k4 = k2k3
(d) k1k2 = k3k4
pls rewply fast