railway RRB JE (CBT I + CBT II) Mock Test 2024 Heat Transfer Conduction Fourier Law and Thermal Conductivity
Three metal walls of the same thickness and cross-sectional area have thermal conductivities 2k, 4k and 6k respectively. The temperature drop across the walls (for same heat transfer) will be in the ratio:
1
3 : 2 : 1
2
1 : 1 : 1
3
1 : 2 : 3
4
None of these