NEET Physics Conduction MCQ Question
Four rods of same material with different radii r and length are used to connect two reservoirs of heat at different temperatures. Which one will conduct most heat?
r = 1 cm, ℓ = 1 m
r = 2 cm, ℓ = 2 m
r = 1 cm, ℓ = 1/2 m
r = 2 cm, ℓ = 1/2 m
Correct Answer
Detailed Explanation
The heat conduction depends on the cross-sectional area and length of the rod. A larger radius and shorter length will conduct more heat due to lower thermal resistance.
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