11th Class Physics Thermal Properties of Matter / द्रव्य के तापीय गुण Question Bank Thermal Properties of Matter Conceptual Problems

  • question_answer
    Why felt rather than air is employed for thermal insulation?

    Answer:

                    Though air is a bad conductor of it, it transfers heat easily by convection. Felt traps air between its fibres and convection currents cannot be set up in it. This makes felt a better thermal isolator than air.


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