question_answer

Which of the substances A, B and C has the lowest heat capacity, if heat is supplied to all of them at equal rates/The temperatures versus time graph is shown:  

A) A                                 

B) B

C) C                                 

D) Equal for all

Correct Answer: A

Solution :

Substance having more heat capacity takes longer time to get heated to a higher temperature and longer time to get cooled. If we draw a line parallel to the time axis, then it cuts the given graphs at three different points corresponding points on the time axis show that \[{{\operatorname{t}}_{C}}> {{t}_{B}}> {{t}_{C}} or {{C}_{C}} > {{C}_{B}}> {{C}_{A}}\]