Question

give reason for automobiles radiators are painted black​

Answer 1

Answer:

Car radiators are painted black because it emits the most heat through radiation (highest emissivity). This improves the heat transfer out of the radiator when air isn't moving through the radiator. Also note that many cars are intended for the area behind the grille to be black (a backdrop to the grille).

Answer 2

Explanation:

Car radiators are painted black because it emits the most heat through radiation (highest emissivity). This improves the heat transfer out of the radiator when air isn't moving through the radiator. ... Also note that many cars are intended for the area behind the grille to be black (a backdrop to the grille).