How does the heat transfer take place in metals?
A. volumetric density
B. transporting energy with free electrons
C. unstable elastic collision d. random molecular collision
D. None of the above
Heat transfer deals with the rate of
A. work transfer
B. temperature transfer
C. energy transfer
D. none of the above
Which among the following has lowest thermal conductivity among the others?
A. silver
B. water
C. mercury
D. copper
In gases, the transfer of heat takes place by
A. volumetric density
B. transporting energy with free electrons
C. unstable elastic collision
D. random molecular collision
Internal energy of a substance is associated with
A. microscopic modes of energy
B. macroscopic modes of energy
C. both a. and b.
D. none of the above
In which phase of a substance does conduction mode of heat transfer take place?
A. solid
B. liquid
C. gaseous
D. all of the above