Question

What are the 2 conditions for heat transfer by conduction

Answer 1

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here is your answer.

Conduction is the passing of heat energy between two objects that are in direct, physical contact. It is one of the three types of heat transfer, the other two beingconvection and radiation. Whenever two objects of different temperatures are in contact with each other, heat energy will pass between them.

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Answer 2

The main condition for heat transfer by conduction are
...the two objects should be in direct physical contact
....