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JEE Main2009PhysicsThermal Properties of MatterActual

A long metallic bar is carrying heat from one of its ends to the other end under steady-state. The variation of temperature along the length x of the bar from its hot end is best described by which of the following figure.

Correct answer

1

Step-by-step solution

We know that dQ dt = KA d dx In steady state flow of heat aligned & d = dQ dt 1 kA dx & _ H - = k ^ x = _ H - k ^ x aligned Equation = _H-k^ x represents a straight line.

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