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JEE Main & Advanced Physics Thermometry, Calorimetry & Thermal Expansion Question Bank Topic Test - Thermometry, Calorimetry & Thermal Expansion

  • question_answer
    If the length of a cylinder on heating increases by 2%, the area of its base will increase by- 

    A) 0.5%                

    B) 2%

    C) 1%                               

    D) 4% 

    Correct Answer: D

    Solution :

    Length is increased by 2% \[\frac{\Delta A}{A}\,=\,B\,\times \,4\theta \,=\,(\alpha \,\times \,\Delta \theta )\] Area will increase by 4%


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