NEET Physics Heat Transfer MCQ Question
A metal rod of length 0.5 m and cross-sectional area 0.01 m² is subjected to a temperature difference of 100 K. If the thermal conductivity of the metal is 200 W/m·K, what is the rate of heat transfer through the rod?
400 W
1000 W
2000 W
500 W
Correct Answer
Detailed Explanation
The rate of heat transfer through the rod can be calculated using the formula: Q/t = k * A * ΔT / L. Substituting the given values, the rate is 200 * 0.01 * 100 / 0.5 = 400 W.
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