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

  • question_answer
    The graph AB shown in figure is a plot of temperature of a body in degree celsius and degree Fahrenheit. Then

    A)            Slope of line AB is 9/5       

    B)            Slope of line AB is 5/9

    C)            Slope of line AB is 1/9       

    D)            Slope of line AB is 3/9

    Correct Answer: B

    Solution :

                       Relation between Celsius and Fahrenheit scale of temperature is \[\frac{C}{5}=\frac{F-32}{9}\] Þ C = \[\frac{5}{9}F-\frac{160}{9}\]            Equating above equation with standard equation of line \[y=mx+c\] we get slope of the line AB is \[m=\frac{5}{9}\]


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