Question

Ends of two different rods A and B are maintained
at same temperature difference. Thermal conduc-
tivities, area of cross-sections and lengths of A and
B are all in the ratio 5: 3. If the rate of flow of heat in rod A is 15 cal/s, then that in rod B is
(1) 3 cal/s
(2) 25 cal/s
(3) 15 cal/s
(4) 9 cal/s


answer is (4) pls explain​

Answer 1

Answer:

hope it will help uh in understanding