railway RRB JE (CBT I + CBT II) Mock Test 2024 Heat Transfer Conduction

Two walls of same thickness and cross-sectional area have thermal, conductivities in the ration 1 : 2. If the ratio of temperature drop across the two walls is 2 : 3, what is the ratio of heat flow?

1
1 : 2
2
1 : 3
3
2 : 1
4
3 : 1
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