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

  • question_answer
    At what temperature the centigrade (Celsius) and Fahrenheit, readings are the same [RPMT 1997, 99, 2003; BHU 1997; MNR 1992; DPMT 1998; CPMT 1995; UPSEAT 1999; KCET 2000]

    A)            ? 40°                                        

    B)            + 40°

    C)            36.6°                                        

    D)            ? 37°

    Correct Answer: A

    Solution :

               \[\frac{C}{5}=\frac{F-32}{9}\] Þ \[\frac{t}{5}=\frac{t-32}{9}\] Þ \[t=-\,40{}^\circ \]


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