iran-konkur 2016 Q173

iran-konkur · Other · konkur-riazi_1395_specialized Not Maths
173- In the figure shown, two conducting rods are placed between two heat sources. If the cross-sectional area of rod A is $\frac{1}{2}$ the cross-sectional area of rod B, and the thermal conductivity of rod A is 6 times the thermal conductivity of rod B, what is the ratio of the thermal conduction rate in rod A to the thermal conduction rate in rod B?
\begin{minipage}{0.45\textwidth} [Figure: Two rods A and B connected between heat sources $T_1$ and $T_r \neq T_1$] \end{minipage} \begin{minipage}{0.45\textwidth}
  • [(1)] $2$
  • [(2)] $4(2)$
  • [(3)] $\dfrac{1}{2}$
  • [(4)] $\dfrac{1}{4}$
\end{minipage}
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\textbf{173-} In the figure shown, two conducting rods are placed between two heat sources. If the cross-sectional area of rod A is $\frac{1}{2}$ the cross-sectional area of rod B, and the thermal conductivity of rod A is 6 times the thermal conductivity of rod B, what is the ratio of the thermal conduction rate in rod A to the thermal conduction rate in rod B?

\begin{minipage}{0.45\textwidth}
\textit{[Figure: Two rods A and B connected between heat sources $T_1$ and $T_r \neq T_1$]}
\end{minipage}
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\begin{minipage}{0.45\textwidth}
\begin{itemize}
\item[(1)] $2$
\item[(2)] $4(2)$
\item[(3)] $\dfrac{1}{2}$
\item[(4)] $\dfrac{1}{4}$
\end{itemize}
\end{minipage}

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