The coefficient of thermal conductivities of the metals are K and 2K respectively. If the furnace temperature at one end is 300° C and ice box temperature at the other end is 0° C, then the junction temperature is
A) 100°C
B) 125°C
C) 150°C
D) 200°C
Correct Answer: A
Solution :
Temperature of interface \[\theta =\frac{{{k}_{1}}{{\theta }_{1}}{{l}_{2}}+{{k}_{2}}{{\theta }_{2}}{{l}_{1}}}{{{k}_{1}}{{l}_{2}}+{{k}_{2}}{{l}_{1}}}\] \[=\frac{2k\times 0\times l+k\times 300\times l}{kl+2kl}={{100}^{o}}C\]
You need to login to perform this action.
You will be redirected in
3 sec
