Q. Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place

• (A) Between two bodies in physical contact with each other
• (B) Between two bodies not in physical contact with each other
• (C) From one part of a body to the another part of the same body
• (D) Both 'b' & 'c'