If heat conducted into the element at plane x is Q X =

Question

If heat conducted into the element at plane x is Q X = – k A C (d t/d x) X. Then heat conducted out of the element at plane (x + d x) is

Options:

A . – 2k A C d/d x (t + d t/d x (d x))

B . – k A C d/d x (t + d t/d x (d x))

C . – 3k A C d/d x (t + d t/d x (d x))

D . – 4k A C d/d x (t + d t/d x (d x))

Answer: Option B
Answer: (b).– k A C d/d x (t + d t/d x (d x))

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