JEE Main Paper Keys: The National Testing Agency (NTA) released the JEE Main 2025 Session 1 final answer key for B.E/B.Tech (Paper 1) on its...
JEE Main Answer Key 2025: Check Session 1/2 Answer Sheet (Set A, B, C, D)
November 10, 2024Last Call for Smart Savings. Prices are climbing soon! Get 30%
off on Annual Courses.
Use code UNLOCK30
JEE Main Answer Key 2025: Check Session 1/2 Answer Sheet (Set A, B, C, D)
November 10, 2024JEE Main Study Material 2025: Check Subject-wise Books & Papers
November 10, 2024JEE Main Admit Card 2025 (January): Direct Download Link
November 10, 2024JEE Main Syllabus 2025 (New): Download PDF
November 9, 2024JEE Main Mock Test 2025 (Latest): Attempt JEE Online Series with Solutions
November 9, 2024JEE Main Exam Pattern 2025 (Revised): Marking Scheme, Total Marks, Syllabus by NTA
November 9, 2024Important Topics for JEE Main 2025: Physics, Chemistry and Mathematics
November 9, 2024JEE Main Exam Centres 2025: Know the List of Test Cities
November 8, 2024JEE Main Chemistry Syllabus 2025: Physical, Inorganic & Organic
October 28, 2024JEE Main Physics Syllabus 2025 (New): Important Topics, Best Books
October 28, 2024Thermodynamics is one of the most dreaded topics by engineering aspirants. There are so many formulae, laws and theories promulgated by different scientists which makes this topic lengthy and complex. JEE Main and JEE Advanced aspirants need to have good command over thermodynamics as it is a very important and high scoring topic of Physics. Although there are different ways to approach the topic, one of the most effective ways is to try and solve tricky questions and assess one’s command over the topic.
Thermodynamics covers the relationship between temperature, heat, work and energy. The students who intend to score good marks in this section must have good understanding of these four first. Any lag or gap in any of these individual topics may prove to be a roadblock while studying thermodynamics. This is why thermodynamics is not only a lengthy topic but tricky as well!
Thermodynamics is the study of the dynamics of heat, temperature, work and energy and the interactions between these quantities in a system. In short, heat is a form of energy, and this energy is equivalent to a definite amount of mechanical (physical movement or displacement of a body) work!
There are four Laws of Thermodynamics which summarise the whole concept of relationship between work, energy, heat and temperature. These are:
Zeroth Law: Two systems are considered to be in thermal equilibrium if they are individually in equilibrium with a third system. Practical Application: A Thermometer
First Law: This is also known as the Law of Conservation of Energy, which states that the change in internal energy of a system is equal to the work done by the system minus the heat added to it. Practical Application: Heat Engine
Second Law: Heat flows from a body at higher temperature to a body at lower temperature. This results in the change of entropy of the system. In the process, some energy loss takes place. Practical Application: Refrigerators
Third Law: This law allows for heat capacity measurements. The law states that the entropy of a perfect crystal (pure substance) approaches zero at absolute zero temperature.
The questions of Thermodynamics are tricky for obvious reasons. There are so many factors and variables at play when we talk about a system of bodies. Then there are different quantities like entropy, temperature, work, energy and its types, etc. which are inter-related. Since every law of thermodynamics has different applications and derivations, it is again tricky to solve the questions!
Some examples of complex questions of thermodynamics are:
Example 1:
A thermally insulating cylinder has a thermally insulating and frictionless movable partition in the middle, as shown in the figure below:
On each side of the partition, there is one mole of an ideal gas, with specific heat at constant volume, ? = 2?. Here, ? is the gas constant. Initially, each side has a volume ?0 and temperature ?o . The left side has an electric heater, which is turned on at very low power to transfer heat ? to the gas on the left side. As a result the partition moves slowly towards the right reducing the right side volume to ?0/2. Consequently, the gas temperatures on the left and the right sides become ?l and ?r, respectively. Ignore the changes in the temperatures of the cylinder, heater and the partition, Find the value of Tr/To and Q/RTo
Example 2:
Internal Energy of the thermodynamics system is given by which of the following formula:
The right approach to a problem is the way forward to solve tricky thermodynamics questions. But it is not easy to get through the topic and understand each and every concept in a limited time. One of the best ways is to practise as many questions as you can and try to solve a variety of questions of varying difficulty levels!
Stay tuned to Embibe to know more!
JEE Main Paper Keys: The National Testing Agency (NTA) released the JEE Main 2025 Session 1 final answer key for B.E/B.Tech (Paper 1) on its...
JEE Main 2025 Study Material: The National Testing Agency (NTA) conducts JEE Main annually to select candidates for engineering courses for government and private colleges....
JEE Main Admit Card 2025: National Testing Agency (NTA) officials will release the JEE Main 2025 admit card for JEE Main Session 1 on their...
JEE Main Syllabus 2025: The syllabus for JEE Main 2025 has been released with official notification. The National Testing Agency (NTA) publishes JEE Main syllabus...
JEE Main Mock Test 2025: Let’s start with addressing the elephant in the room, shall we? As per the JEE Main 2024 Session 1 statistics,...
JEE Main Exam Pattern 2025: The National Testing Agency (NTA) releases the JEE Main 2025 exam pattern and the information bulletin. The JEE Main exam...
JEE Main 2025 Important Topics: While many candidates succeed in passing the JEE Main on their first try, some still struggle a lot. Lack of...
The National Testing Agency (NTA) has released the list of JEE Main 2025 exam city centres on its official web portal, jeemain.nta.ac.in. To check the...
JEE Main 2025 Chemistry Syllabus: The National Test Agency (NTA), the conducting body of JEE Main 2025, prescribes the JEE Main Chemistry syllabus. The JEE...
JEE Main 2025 Physics Syllabus: The National Testing Agency (NTA) will release the JEE Main 2025 Physics syllabus PDF on the official website and the...
JEE Main Question Paper: JEE Main 2025 question papers are among the most useful study materials for acing the test on the first attempt. Generally,...
JEE Main Important Dates 2025: The National Testing Agency (NTA) has released JEE Main 2025 application form on October 28, 2024. JEE Main registration will...
JEE Main 2025 Application Form Open: The National Testing Agency (NTA) started the JEE Main 2025 registration from October 28, 2024. The JEE Main application...
JEE Main Rank Predictor 2025: A rank predictor is a tool that helps candidates get the probable ranks per the marks they will achieve in...
When the question of how to crack JEE Main arises, the answer lies in a few words—hard work, dedication to study and attempting as many...
The Joint Seat Allocation Authority (JoSAA) authorities are conducting the JEE Main 2025 counselling process. Candidates qualified for the JEE Main 2025 exam will be...
Students have been putting in a lot of effort for years, juggling schoolwork and the entrance exam syllabus while attending sessions at schools and coaching...
JEE Main 2025 Scoring Tips: JEE Main 2025 Session 1 will be conducted in January, 2025. Every engineering aspirant must implement an effective last-minute JEE...
JEE Main Previous Year Papers: The best time to practise JEE Main previous year papers is now because JEE Main Session 1 is scheduled in...
NIT Surathkal ended the placement year of 2024-25 with a successful outcome, with 93% of BTech candidates, 75% of MTech candidates, 88% of MCA candidates,...
JEE Main 2025 Marks Vs Rank: The candidates will be able to find and calculate their ranks depending on the marks received in the exam...
JEE Main Preparation Tips 2025: The National Testing Agency (NTA) conducts JEE Mains for admission to undergraduate courses in various engineering colleges in India. While...
JEE Main 2025 Login: NTA will activate the JEE Main login portal along with registration link Session 1 & 2 on its official webpage jeemain.nta.nic.in....
JEE Main Mathematics Syllabus 2025: The National Testing Agency (NTA) prescribes the JEE Main Maths syllabus containing the detailed topics covered in the engineering entrance exam....
Unleash Your True Potential With Personalised Learning on EMBIBE
Create Free Account