Question

6)
An automobile radiator is a device, where hot water passes inside through a bank of
tubes and loses heat to the air. On the outside of the tubes, extended surfaces receive
heat from the tube walls and transmit it to the air by:
Free convection
b. Forced and free convection
c. Only Radiation
d. Conduction​

Answer 1

Answer:

I don't know the answer but I will tell you afterwards

Answer 2

radiation heat transfer

1 Answer. Through vacuum only by radiation heat transfer will take place.