Physics

Problem

8. A metal rod of length L and cross-sectional area A connects two thermal reservoirs of temperatures `

\mathrm{T}_{1}

` and `

\mathrm{T}_{2}

`. The amount of heat transferred through the rod per unit time is directly proportional to (A) A and L (B) A and `

1 / \mathrm{L}

` (C) 1/A and L (D) `

1 / \mathrm{A}

` and `

1 / \mathrm{L}

` (A) A and L (B) A and `

\mathrm{1 / L}

` (C) 1/A and L (D) `

\mathrm{1 / A}

` and `

\mathrm{1 / L}