Physics · 2010
NEET 2010 · Prelims · Code A · Q15
A cylindrical metallic rod in thermal contact with two reservoirs of heat at its two ends conducts an amount of heat Q in time t. The metallic rod is…
A cylindrical metallic rod in thermal contact with two reservoirs of heat at its two ends conducts an amount of heat $\displaystyle Q$ in time $\displaystyle t$. The metallic rod is melted and the material is formed into a rod of half the radius of the original rod. What is the amount of heat conducted by the new rod, when placed in thermal contact with the two reservoirs in time $\displaystyle t$ ?
Official answer
(3)
$\displaystyle Q / 16$
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NEET (UG) 2010 Physics question, with the answer from NTA’s final answer key. Where our answers come from.