In an equation of Fourier law of heat conduction, heat flow through a body per unit time is \(Q = - kA\frac{{dT}}{{dx}}\), the negative sign of k in this equation is to take care of

Increasing temperature along the direction of increasing thickness

Decreasing temperature along the direction of increasing thickness

Constant temperature along the direction with constant thickness

In an equation of Fourier law of heat conduction, heat flow through a

1.	In an equation of Fourier law of heat conduction, heat flow through a body per unit time is \(Q = - kA\frac{{dT}}{{dx}}\), the negative sign of k in this equation is to take care of
A.	Decreasing temperature along the direction of increasing thickness
B.	Increasing temperature along the direction of increasing thickness
C.	Constant temperature along the direction with constant thickness
D.	All of the above
Answer» B. Increasing temperature along the direction of increasing thickness

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In an equation of Fourier law of heat conduction, heat flow through a body per unit time is \(Q = - kA\frac{{dT}}{{dx}}\), the negative sign of k in this equation is to take care of

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