A) \[2({{K}_{1}}+{{K}_{2}})\]
B) \[\frac{{{K}_{1}}+{{K}_{2}}}{2}\]
C) \[\frac{3({{K}_{1}}+{{K}_{2}})}{2}\]
D) \[{{K}_{1}}+{{K}_{2}}\]
Correct Answer: B
Solution :
Thermal current \[H={{H}_{1}}+{{H}_{2}}\] \[=\frac{{{K}_{1}}A({{T}_{1}}-{{T}_{2}})}{d}+\frac{{{K}_{2}}A({{T}_{1}}-{{T}_{2}})}{d}\] \[\frac{{{K}_{EQ}}2A({{T}_{1}}-{{T}_{2}})}{d}=\frac{A({{T}_{1}}-{{T}_{2}})}{d}[{{K}_{1}}+{{K}_{2}}]\] \[{{K}_{EQ}}=\left[ \frac{{{K}_{1}}+{{K}_{2}}}{2} \right]\]You need to login to perform this action.
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