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Black is a good radiator and emitter of heat hence it increases the rate of infrared radiation so the refrigerator will lose heat easily

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the Colour black is a good radiator of heat. Being a good radiator of heat, it emits heat away from the refrigerator at a higher rate. Hence, heat is able to be emitted away from the refrigerator faster.

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The black colour fins increases the rate of infrared radiation as it is a good emitter of infrared radiation. Thus infrared radiation is lost faster.

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The black fins are made of metal, which is a good conductor of heat. Thus, heat is conducted away from the refrigerator faster. The black fins also allow for movement of air. Air around the fins will absorb thermal energy from the black fins, and thus it will heat up, become less dense and will rise up. Cooler air will rush in to replace the air and the cycle repeats itself and a convection current is made. The fins are black, which makes them good radiators of heat, allowing the heat to be trapped near the fins and away from the fridge

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The black fins is a good emitter of thermal energy which will increase the rate of thermal energy lost

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The black fins is black and it is a good radiator. It is designed in a way that the thermal energy forms convection current.

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The fins are made of metal, hence being able to conduct heat away at a faster rate. It is also black and is a better emmiter of radiation.

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The black fins help to radiate heat away from the refrigerator as the black fins are black which is a good emitter of radiation resulting in a faster rate of thermal energy lost.

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The fins are black which is the best  emitter which can radiate heat away from the refrigerator. The fins are also made of metal which are good conductor of heat.

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The black fins has a black surface which emits infrared radiation at faster rate, thus the rate of thermal energy loss from the fins to the surrounding is faster and thus losing thermal energy quickly.

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How do the fins at the back of the refrigerator help it lose thermal energy quickly?