Heat Transfer

When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________________?

A. conduction
B. convection
C. radiation
D. conduction and convection
E. convection and radiation

A. zeroth law of thermodynamics
B. first law of thermodynamic
C. second law of the thermodynamics
D. Kirchoff’s law E. Stefan’s law