Questions
The coefficient of thermal conductivity of copper is 9 times that of steel. In the composite cylindrical bar shown in the figure. What will be the temperature at the junction of the copper and steel.
detailed solution
Correct option is A
Rate of heat flow far both the rods are same.Qt=KAθ1-θ2l=constant9K100-θ18=Kθ-06300-3θ=θθ=75oCTalk to our academic expert!
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