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

  • question_answer
    Coefficient of real expansion of mercury is 0.18 ´ 10?3/°C. If the density of mercury at 0°C is 13.6 gm/cc. its density at 473K is                                                        [DPMT 1996]

    A)            13.11 gm/cc                          

    B)            26.22 gm/cc

    C)            52.11 gm/cc                          

    D)            None of these

    Correct Answer: A

    Solution :

                       \[\rho ={{\rho }_{0}}(1-\gamma .\Delta \theta )=13.6[1-0.18\times {{10}^{-3}}(473-273)]\]                \[=13.6[1-0.036]=13.11\,gm/cc\].


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