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A long metallic bar is carrying heat fro...

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

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
A
`(dQ)/(dt) =- kA (d theta)/(dx)`
at steady state `(dQ)/(dt) = constant`.
`d theta alpha - dx`
`overset(theta)underset(theta_(0))int d theta == k overset(x)underset(0)int dx`
`theta = theta_(0) - kx`
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