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

  • question_answer
    The resistance of a resistance thermometer has values 2.71 and 3.70 ohm at \[10{}^\circ C\] and \[100{}^\circ C\]. The temperature at which the resistance is 3.26 ohm is

    A) \[40{}^\circ C\]

    B) \[50{}^\circ C\]

    C) \[60{}^\circ C\]

    D) \[70{}^\circ C\]

    Correct Answer: B

    Solution :

                   Change in resistance \[3.70-2.71=0.99\,\Omega \] corresponds to interval of temperature \[90{}^\circ C\]. So change in resistance \[3.26-2.71=0.55\,\Omega \] Corresponds to change in temperature \[=\frac{90}{0.99}\times 0.55=50{}^\circ C\]


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