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JEE Main & Advanced Physics Thermometry, Calorimetry & Thermal Expansion Question Bank Topic Test - Thermometry, Thermal Expansion and Calorimetry (3-5-21)

  • 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 :

                   \[A\propto {{L}^{2}}\] \[\Rightarrow \] \[\frac{\Delta A}{A}=2\cdot \frac{\Delta L}{L}\] \[\Rightarrow \] \[\frac{\Delta A}{A}=2\times 2=4%\].


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