A student measures the rate of energy transfer by conduction through a uniform rod of…

PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter

Problem

A student measures the rate of energy transfer by conduction through a uniform rod of fixed length LL and cross-sectional area AA. Plotting the measured rate QΔt\dfrac{Q}{\Delta t} on the vertical axis against the imposed temperature difference ΔT\Delta T on the horizontal axis yields a straight line through the origin. Which of the following physical quantities is represented by the slope of this line? (a) 2kAL\dfrac{2kA}{L} (b) kA2L\dfrac{kA}{2L} (c) kAL\dfrac{kA}{L} (d) πkAL\dfrac{\pi kA}{L}

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