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

  • question_answer
    A match stick can be lighted by rubbing it against a rough surface. Why?

    Answer:

                    When the match stick is rubbed against a rough surface, work is done against friction. This work done appears as heat and lights up the match stick.


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