(b) It is advisable to place room heaters at the ground level for effective heating.
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HEATER is placed near the floor because hot air rises up and the room will be heatness will spread even.
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HEATER is placed near the floor because hot air rises up and the room will be heatness will spread even. The density of air depends upon the temperature. If the density of air is high then it will settle in the bottom and if it is less dense and it will move upwards.
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