The rate of heat flow through a slab is \( P_{\text {cond }} \). If the slab thickness is double...
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1The rate of heat flow through a slab is \( P_{\text {cond }} \). If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes
(A) \( 2 P_{\text {cond }} \)
(B) \( \frac{P_{\text {cond }}}{2} \)
(C) \( P_{\text {cond }} \)
(D) \( \frac{P_{\text {cond }}}{8} \)
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