Inside surface of solar cooker is painted black because:

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Black surfaces being good conductor of radiation emit more heat

Black surfaces emit heat

Black surfaces being good conductor of radiation absorb more heat

None of the above

answer is C.

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Detailed Solution

Concept- A solar cooker is a type of cooking apparatus that uses the energy from direct sunshine to heat, cook, or aseptically preserve beverages and other food items. The majority of solar cookers in use today are low-tech, economically viable equipment. Some cook for as many people as traditional stoves while others are more expensive or equally effective.
A solar cooker's inside is colored black because they must concentrate sunlight onto a receiver, such as a frying pan. A solar cooker is a type of cooking apparatus that uses the energy from direct sunshine to heat, cook, or aseptically preserve beverages and other food items. The majority of solar cookers in use today are low-tech, economically viable equipment. Some cook for as many people as traditional stoves while others are more expensive or equally effective.
Hence, the correct option is 3.

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