question_answer

A heat flux of \[4000\ J/s\] is to be passed through a copper rod of length \[10\ cm\] and area of cross-section \[100\ c{{m}^{2}}\]. The thermal conductivity of copper is \[400\ W/m{{\ }^{o}}C\]. The two ends of this rod must be kept at a temperature difference of                                [MP PMT 1999]

A)            \[{{1}^{o}}C\]                      

B)            \[{{10}^{o}}C\]

C)            \[{{100}^{o}}C\]                  

D)            \[{{1000}^{o}}C\]