railway RRB JE (CBT I + CBT II) Mock Test 2024 Heat Transfer Conduction Fourier Law and Thermal Conductivity
A furnace is made of a red brick wall of thickness 0.6 m and conductivity 0.8 W/m K. For the same heat loss and temperature drop, this can be replaced by diatomite earth of conductivity 0.16 W/m K and thickness of
1
0.55 m
2
0.12 m
3
1.25 m
4
0.50 m