Question

Which of the following is the best reason why car engines are painted black?

• A. Black is a good radiator and poor absorber of heat
• B. Black is a poor radiator and good absorber of heat
• C. Black is a good radiator and good absorber of heat
• D. Black is a good absorber and poor conductor of heat

Answer 1

The correct option is C

Black is a good radiator and good absorber of heat

Black is a good radiator and good absorber of heat so it absorbs energy and re-radiates it. In the case of engine, it absorbs heat from the engine and radiates it into the environment.