NEET Physics Heat Transfer MCQ Question
A metal rod with a thermal conductivity of 200 W m⁻¹ K⁻¹ is 0.5 m long and has a cross-sectional area of 0.01 m². If one end of the rod is maintained at 400 K and the other end at 300 K, what is the rate of heat transfer through the rod?
400 W
200 W
1000 W
2000 W
Correct Answer
Detailed Explanation
The rate of heat transfer is calculated using H = KA(T_C - T_D)/L. Substituting the given values: H = 200 * 0.01 * (400 - 300) / 0.5 = 400 W.
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