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Fourier's law of heat conduction gives the heat flow for

This question belongs to Mechanical Engineering Heat And Mass Transfer
Heat and Mass Transfer
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Fourier's law of heat conduction gives the heat flow for

Answer & Solution
Correct Answer: Option C
Fourier's law of heat conduction is valid for One dimensional cases only
Fourier equation is valid for all matter solid, liquid or gas. The vector expression indicating that heat flow rate is normal to an isotherm and is in the direction of decreasing temperature.
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