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

  • question_answer
    The length of a metallic rod is 5m at 0°C and becomes 5.01 m, on heating upto 100°C. The linear expansion of the metal will be                                                         [UPSEAT 1999]

    A)            2.33 ´ 10?5 /°C                      

    B)            6.0 ´ 10?5 /°C

    C)            4.0 ´ 10?5 /°C                        

    D)            2.0 ´ 10?5 /°C

    Correct Answer: D

    Solution :

               \[\alpha =\frac{\Delta L}{{{L}_{0}}\times \Delta \theta }=\frac{0.01}{5\times 100}=2\times {{10}^{-5}}/{}^\circ C\]


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