2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Thermometry, Calorimetry & Thermal Expansion

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

  • question_answer
    A student takes 50gm wax (specific heat = 0.6 kcal/kg°C) and heats it till it boils. The graph between temperature and time is as follows. Heat supplied to the wax per minute and boiling point are respectively                                             [BHU 1994]

    A)            500 cal, 50°C                         

    B)            1000 cal, 100°C

    C)            1500 cal, 200°C                    

    D)            200°C

    Correct Answer: C

    Solution :

                       Since specific heat = 0.6 kcal/gm ´ °C = 0.6 cal/gm ´°C From graph it is clear that in a minute, the temperature is raised from 0°C to 50°C. Þ Heat required for a minute = 50 ´ 0.6 ´ 50 = 1500 cal. Also from graph, Boiling point of wax is 200°C.


You need to login to perform this action.
You will be redirected in 3 sec spinner