Question

Question 34 " Heat radiators in cars are coated with black colour" is an example of​

Answer 1

Answer:

Black surfaces are the best absorbsers as well as best emitters of Heat. As Radiators are heat exchangers used for cooling engines, they are painted with carbon black or Aluminium to cool the engines efficiently. Because black colour absorbs more heat , while light not.

Explanation:

i think ur 7th

i had this question when i was in 7th

Answer 2

"Heat radiators in cars are coated with black colour" is an application of the property that Black colour is a good radiator as well good absorber.

• Heat radiators in cars are coated with black because black colour is both a good radiator and a good absorber of heat.
• The black colour of the radiator makes it easy for the engine to radiate a high amount of heat and thus the car's engine remains cool.

• Black colour radiates the most amount of heat energy through radiation since it has the highest emissivity. This enables the heat energy from the engine to get transmitted through the radiator.

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