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

  • question_answer
    The coefficient of superficial expansion of a solid is 2 ´ 10?5 /°C. It's coefficient of linear expansion is        [KCET 1999]

    A)            4 ´ 10?5/°C                             

    B)            3 ´ 10?5/°C

    C)            2 ´ 10?5/°C                             

    D)            1 ´ 10?5/°C

    Correct Answer: D

    Solution :

    \[\alpha =\frac{\beta }{2}=\frac{2\times {{10}^{-5}}}{2}={{10}^{-5}}/{}^\circ C\]


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