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

  • question_answer
    A tightened glass stopper can be taken out easily by pouring hot water around the neck of the bottle. Why?

    Answer:

                    The neck expands but not the stopper due to poor conductivity of glass. Thus the stopper can be taken out easily.


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