Question

Mention the purpose of blackening the interior of a solar cooker.

Answer 1

Answer: Solar cookers are blackened from inside because black absorbs more heat from sun as compared to other colours. ... The inside of a solar cooker is painted black, so that the heat radiation coming into it are absorbed and not reflected back. This helps in rapid increase of temperature inside the solar cooker.

Answer 2

★ AnSwEr :

Solar cooker are black from inside because black volour absorbs more than a white or prevents heat loss. The black painted surface is used in the interior of a solar cooker because black surface absorbs more heat rays of the sun.

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★ Additional information :

• Most solar cookers work on the basic principle: Sunlight is converted to heat energy.

• Solar cooking is done by means of the suns UV rays.

• A solar cooker lets the UV light rays in and then converts them to longer infrared light rays that cannot escape.

• Infrared radiation has the right energy to make the water, fat and protein molecules in food vibrate vigorously and heat up.