If heat conducted into the element at plane x is Q X = – k A C (d t/ – McqOptions

MCQOPTIONS

1.	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
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» C. – 3k A C d/d x (t + d t/d x (d x))

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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