$\Rightarrow\left(C_{P}-C_{V}\right) \Delta T=P \Delta V$ ………..(4) $P d V+V d P=0$ Due to which the molecules of gas get more space to move about. Work is a path function. Answer the following. They move in all directions with different speeds. • Good luck in the upcoming exams! Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. Learn all the concepts of thermodynamics from these important questions of class 11 Physics. Expert's answer. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. If the temperature of body increases by $1^{\circ} \mathrm{C},$ what will be change in temperature on kelvin scale? Solution . What is the pressure inside the container? SHOW SOLUTION Two bodies at different temperatures $\mathrm{T}_{1}$ and $\mathrm{T}_{2}$if brought in thermal contact do not necessarily settle to the mean temperature $\left(\frac{T_{1}+T_{2}}{2}\right)$ (i) Because an opening the stop-cock, the volume of gas is doubled at constant temperature as the system is thermally insulated, as the gas expands against zero pressure, so, in accordance to first law of thermodynamics, Q. Conceptual Questions. (ii) An explained above, there is no change in internal energy. SHOW SOLUTION What is the valve of work-done in a cyclic process ? This question bank is designed by expert faculties keeping NCERT in mind and the questions are updated with respect to upcoming Board exams. (iv) State and explain first law of thermodynamics. \Delta W$is negative. A gas is filled in a cylinder fitted with a piston at a definite temperature and pressure. Then$N$will be number of molecules present in volume$V$i.e.,$N$will be Avogadro’s number. SHOW SOLUTION Although the root mean square speed of gas molecules is of the order of the speed of sound in that gas, yet on opening a bottle of ammonia in one corner of a room its smell takes time in reaching the other corner. NEET Physics : Thermodynamics. SHOW SOLUTION Thus molecular motion ceases at zero kelvin. Here, you will discover the NEET Physics MCQ Questions for all Concepts as per the latest syllabus. Thus, the absolute temperature of a gas is directly proportional to the mean square velocity of the molecules of a gas. … SHOW SOLUTION After a short time interval, the gas returns to equilibrium states which lies on its P-V-T surface. Solution:-The correct option is (D). What is the source of mechanical energy so produced ? Here we have covered Important Questions on Thermodynamics for Class 11 Physics subject. Hence, temperature of gas will remain constant.$\Rightarrow P \Delta V+C_{V} \Delta T=C_{P} \Delta T[\text { From equation }(2)]$No, because carnot engine is an ideal heat engine, whose conditions are not realised in practice. (ii) What is the change in internal energy of the gas ? SURVEY . Q. speed (c) of molecules of different gases shall be different. Q. Accuracy: A team of editors takes feedback from our visitors to keep trivia as up to date and as accurate as possible. What is the ice-point on kelvin scale? View all Physics important questions for all the chapters. Atomic Structure Revision Video – Class 11, JEE, NEET. speed. SHOW SOLUTION Your email address will not be published. Thermodynamics is a branch of science which primarily focuses on the relations between heat and various other forms of energy, such as mechanical, chemical or electrical energy, and therefore the relationships between all forms of energy.$P_{\gamma} v^{\gamma-1} . Q. SHOW SOLUTION (d) Now, as internal energy of system depends upon its temperature i.e. eSaral provides you complete edge to prepare for Board and Competitive Exams like JEE, NEET, BITSAT, etc. Q. (ii) What is the change in internal energy of the gas ? But from ideal gas equation, $P V=R T$ …..(iii). Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. At JEE level, Thermodynamics mostly runs on the tip of formulae. Study.com has answers to your toughest physics homework questions with detailed, step by step explanations. speed is the root mean square speed and is defined as the square root of the mean of the squares of different speeds of the individual molecules. $\left(C_{P}-C_{V}\right) \Delta T=R \Delta T$ Here you can get Class 11 Important Questions Physics based on NCERT Text book for Class XI. (ii) and (iii) 7 years ago. (i) What is the final pressure of the gas in A and B? These questions are created by subject experts and are as per the syllabus. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is - This process is achieved I was watching Tenet and it made me think about some old questions I have. Q. SHOW SOLUTION Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. Here you can get Class 11 Important Questions Physics based on NCERT Text book for Class XI.Physics Class 11 Important Questions are very helpful to score high marks in board exams. The molecules of a gas are 2n a state of continuous, rapid and random motion. strategies to Crack Exam in limited time period. SHOW SOLUTION Answer to Question #150492 in Molecular Physics | Thermodynamics for Banda 2020-12-11T00:42:59-0500. SHOW SOLUTION Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. How is the molar gas constant related to the principal gas constant? Year 11 Physics: Waves and Thermodynamics Practice. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. It means the gas C obeys Boyle’s law at all pressures. At what temperature does all molecular motions cease? Physics Question Thermodynamics? $\frac{2}{3} \times \frac{1}{2} M c^{2}=R T$ A gas is filled in a cylinder fitted with a piston at a definite temperature and pressure. October 18, 2019 by Rati S. Leave a Comment. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. S Process – IV (D) Isothermal. SHOW SOLUTION Q. Then $N$ will be number of molecules present in volume $V$ i.e., $N$ will be Avogadro’s number. Adiabatic process and Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. Thermodynamics key facts (4/9) ... • Try questions from the sample exam papers on Blackboard and/or the textbook. It is denoted by $C_{P}$. Practice more on a regular basis with these NEET Physics objective questions on air pollution and improve your subject knowledge & problem-solving skills along with time management. SHOW SOLUTION Q. In fact, we feel cold due to evaporation of sweat. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. A rapidly spinning paddle wheel raises the temperature of 200mL of water from 21 degrees Celsius to 25 degrees. Q. Q. (iii)As explained above, there is also no change in temperature. What will be the effect on the pressure of the gas? $\begin{array}{l}{\text { But from ideal gas equation, }} \\ {P V=R T \quad \text { ideal }} \\ {\text { From equation }(4), \text { we have, }}\end{array} \Rightarrow P \Delta V=R \Delta T$ Is it against the second law thermodynamics ? This question bank is designed by expert faculties keeping NCERT in mind and the questions are updated with respect to upcoming Board exams. Q. Relation between two principal specific heat of a gas : A gas has two specific heats, Relation between two principal specific heat of a, (i) Specific heat at constant volume $\left(C_{V}\right):$ It is the amount of heat required to raise the temperature of unit mass of a gas by $1^{\circ} C$ at constant volume. These important questions from thermodynamics class 11 physics will play significant role in clearing concepts of Physics. Q. Increases, entropy decreases. All Topics Introduction to Thermodynamics Zeroth Law of Thermodynamics Heat, Internal Energy and Work First Law of Thermodynamics Specific Heat Capacity Thermodynamic State Variables and Equation of State Thermodynamic Processes Engines and Cycles Second Law of Thermodynamics Reversible and Irreversible Process, Carnot Engine Find Everything You need (i)$P V=\frac{1}{3} m N c^{2}$ This body at lower temperature is called sink. Therefore pressure is halved i.e. Heat and Thermodynamics's Previous Year Questions with solutions of Physics from JEE Main subject wise and chapter wise with solutions $\left(\frac{d P}{d V}\right)=-\frac{P}{V}$ ………….. (1) c) heat decreases. $\left(\frac{d P}{d V}\right)_{A}=\gamma\left(-\frac{P}{V}\right)=\gamma\left(\frac{d P}{d V}\right)_{I}$ (d) does its temperature rise ? speed is the root mean square speed and is defined as the square root of the mean of the squares of different speeds of the individual molecules. velocity of the gas becomes zero. Q. On  which factor does the average kinetic energy of gas molecules depend : nature of the gas, absolute temperature, volume. Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. Important Questions on Thermodynamics (Physics) for 10+1 class and various competitive Exams like JEE, BSC agriculture , NDA ,NEET etc. ... Introduction to Physics course • Please fill in feedback surveys! Download eSaral App for Video Lectures, Complete Revision, Study Material and much more...Sol. As a result of which less molecules will collide with the wall of cylinder per second and hence less momentum is transferred to the wall per second. Why the molecular motion of the molecules ceases at zero kelvin? It has four fundamental laws. That thermal process in which pressure, volume and temperature of the system change but there is no exchange of heat between the system and the surroundings, is called an adiabatic process. $\overline{c^{2}} \propto T$ ………(v) Q. same. Slopes of isothermal and adiabatic curves It is unique because it occurs at one single temperature The increaments in the temperature on kelvin scale are the same as the those of the celsius scale. MCQ On Thermodynamics. 1.3. (b) has work been done on it? Revision : Electricity. Thus, the mean kinetic energy of a molecule is directly proportional to the absolute temperature of the gas. The entire system is thermally insulated. Q. If the number of molecules is increased to 2n. If $\Delta V$ is the change in volume at constant pressure, Visit eSaral Website to download or view free study material for JEE & NEET. , so temperature of the room be cooled in enclosed in a cyclic process is equal to wire! The same temperature are given equal quantities of heat energy was added to it show that an adiabatic curve sleeper! Explained above, there is no change in, Complete Revision, Study Material and much more... Sol than. 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