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  1. Why two thin shirts can keep us warmer than a single thick shirt in winter ?
    1. Two thin shirts become thicker so prevent transmission of heat
    2. Air layer between two shirts works as good conductor
    3. Air layer between two shirts behaves like insulating media
    4. No radiation of heat takes place
Correct Option: C

Air is a good insulator. Therefore, we feel warmer as the heat can’t conduct away as easily. The reason layers work to keep us warm is that they form air pockets in between each layer which is insulated by our body heat. The more pocket of air we have, the more insulation we have, thus the warmer we are.



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