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    Question

    Two layers of a cloth of equal thickness provide warmer

    covering than a single layer of cloth with double the thickness. Why? 
    A Because of the air encapsulated between two layers Correct Answer Incorrect Answer
    B Since effective thickness of two layers is more Correct Answer Incorrect Answer
    C Fabric of the cloth plays the role Correct Answer Incorrect Answer
    D Weaving of the cloth plays the role Correct Answer Incorrect Answer

    Solution

    Two layers of a cloth are warmer because air trapped between the layers acts as thermal insulator restricting the heat transfer. 

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