In Class 11 Final Exams there will be Case studies and Passage Based Questions will be asked, So practice these types of questions. Study Rate is always there to help you. Free PDF Downloads of CBSE Class 11 Physics Chapter 12 Case Study and Passage-Based Questions with Answers were Prepared Based on the Latest Exam Pattern. Students can solve Class 11 Physics Case Study Questions Thermodynamics to know their preparation level.
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In CBSE Class 11 Physics Paper, There will be a few questions based on case studies and passage-based as well. In that, a paragraph will be given, and then the MCQ questions based on it will be asked.
Thermodynamics Case Study Questions With Answers
Here, we have provided case-based/passage-based questions for Class 11 Physics Chapter 12 Thermodynamics
Case Study/Passage-Based Questions
Case Study 1: The first law of thermodynamics is the general law of conservation of energy applied to any system in which energy transfer from or to the surroundings (through heat and work) is taken into account. It states that the energy supplied to the system goes in partly to increase the internal energy of the system and the rest in work on the environment. Mathematically, ΔQ = ΔU + ΔW where ΔQ is the heat supplied to the system, ΔW is the work done by the system and ΔU is the change in internal energy of the system. ΔQ and ΔW depend on the path taken to go from initial to final states, but the combination ΔQ – ΔW is path independent.
The first law of thermodynamics is concerned with the conservation of
(a) number of molecules
(b) number of moles
(c) energy
(d) temperature
Answer: (c) energy
Which of the following is not a path function ?
(a) ΔQ (b) ΔQ + ΔW
(c) ΔW (d) ΔQ – ΔW
Answer: (d) ΔQ – ΔW
An electric heater supplies heat to a system at a rate of 120 W. If system performs work at a rate of 80 J s–1, the rate of increase in internal energy is
(a) 30 J s–1 (b) 40 J s–1
(c) 50 J s–1 (d) 60 J s–1
Answer: (b) 40 J s–1
A system goes from A to B by two different paths in the P-V diagram as shown in figure. Heat given to the system in path 1 is 1100 J, the work done by the system along path 1 is more than path 2 by 150 J. The heat exchanged by the system in path 2 is
(a) 800 J (b) 750 J
(c) 1050 J (d) 950 J
Answer: (d) 950 J
A certain mass of gas is carried from A to B, along three paths via ACB, ADB and AEB. Which one of the following is correct?
(a) Work done via path ACB is minimum.
(b) Work done via path ADB is maximum.
(c) Work done via path ACB is maximum.
(d) Work done via path AEB is maximum
Answer: (c) Work done via path ACB is maximum.
Case Study 2: Thermodynamics is the branch of physics that deals with the study of heat, work, and energy transfer in various processes. It provides a framework to analyze the behavior of systems and their surroundings concerning energy changes. One of the fundamental concepts in thermodynamics is the idea of thermal equilibrium, where two bodies in contact reach a state with no net heat transfer between them. The first law of thermodynamics, also known as the law of conservation of energy, states that energy cannot be created or destroyed but can only change from one form to another. It deals with the relationship between heat, work, and the internal energy of a system. The second law of thermodynamics introduces the concept of entropy, which represents the measure of the disorder or randomness in a system. It states that in natural processes, the entropy of an isolated system will always increase or remain constant.
Thermodynamics is the branch of physics that deals with the study of:
(a) Light and sound
(b) Heat, work, and energy transfer
(c) Motion and forces
(d) Electricity and magnetism
Answer: (b) Heat, work, and energy transfer
What is the fundamental concept in thermodynamics that involves two bodies in contact reaching a state with no net heat transfer between them?
(a) Thermal equilibrium
(b) Entropy
(c) Conservation of energy
(d) Internal energy
Answer: (a) Thermal equilibrium
Which law of thermodynamics states that energy cannot be created or destroyed, but can only change from one form to another?
(a) The first law of thermodynamics
(b) The second law of thermodynamics
(c) The law of thermal equilibrium
(d) The law of conservation of energy
Answer: (a) The first law of thermodynamics
Entropy represents the measure of:
(a) Heat transfer in a system
(b) Disorder or randomness in a system
(c) Energy transformation in a system
(d) Temperature in a system
Answer: (b) Disorder or randomness in a system
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