2. Sample Papers
  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-3

  • question_answer
    A sphere, a cube and a thin circular plate all made of the same material and having the same mass, are initially heated to a temperature of \[200{}^\circ C\]. Which of these objects will cool slowest when left in air at room temperature?

    A)  the sphere            

    B)   the cube

    C)  the circular plate      

    D)   all will cool at same rate

    Correct Answer: A

    Solution :

     Rate of cooling \[\propto \] surface area and for a given mass, surface area of sphere is minimum.


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