Ncert Solutions question_answer90) An ideal gas is subjected to cyclic process involving four thermodynamic states, the amounts of heat (Q) and work (W) involved in each of these states \[{{Q}_{1}}=6000J;{{Q}_{2}}=-5500J;{{Q}_{3}}=-3000J\] \[{{Q}_{4}}=+\,3500J\] \[{{W}_{1}}=2500J;{{W}_{2}}=-1000J;{{W}_{3}}=-1200J\] \[{{W}_{4}}=xJ\] The ratio of the net work done by the gas to the total heat absorbed by the gas is \[\eta \]. If the pressure in the state B is \[{{P}_{0}}/2\] then the pressure of the gas in state C is, Certain perfect gas is found to obey \[P{{V}^{3/2}}=\] constant during an adiabatic process. | | If a given mass of an ideal gas followed a relation VT = constant during a process, then which of the following graphs correctly represents the process? OTP has been sent to your mobile number and is valid for one hour If \[{{L}_{1}}\] and \[{{L}_{2}}\] are the length of the gas column before and after expansion respectively, then \[\frac{{{T}_{1}}}{{{T}_{2}}}\] is given by, question_answer38) One mole of an ideal gas is taken from state A to state B by three different processes, (i) ACB (ii) ADB (iii) AEB as shown in the P-V diagram. Thermodynamics touches on virtually every field of physics, from astrophysics to biophysics, because they all deal in some fashion with the change of energy in a system. An ideal gas has temperature\[{{T}_{1}}\], at the initial state shown in the P- V diagram. | | THERMODYNAMICS Syllabus : First law of thermodynamics and its … question_answer50) If a given mass of an ideal gas followed a relation VT = constant during a process, then which of the following graphs correctly represents the process? Franchise An inventor claims its efficiency to be 26%, then: question_answer60) A steam engine takes 0.1 kg of steam at \[100{}^\circ C\] per minute and cools it down to \[20{}^\circ C.\]What is the heat rejected by the steam engine per second? Process 1 is isobaric process, process 2 is isothermal and process is adiabatic. If W is positive, the system has lost energy from doing work on its surroundings.. As written the equations have a problem … The total heat given to the gas is nearly (use ln \[2=0.7\]), question_answer65) In P-V diagram shown in figure AB C is a semicircle. Its efficiency is, A Carnot engine whose efficiency is 50% has an exhaust temperature of 500 K. If the efficiency is to be 60% with the same intake temperature, the exhaust temperature must be (in K), For an ideal gas four processes are marked as 1, 2, 3 and 4 on P-V diagram as shown in figure. question_answer32) An ideal gas is initially at \[{{P}_{1}}\], \[{{V}_{1}}\] is expanded to\[{{P}_{2}}\], \[{{V}_{2}}\] and then compressed adiabatically to the same volume f[ and pressure \[{{P}_{3}}\] If W is the net work done by the gas in complete process which of the following is true? Browse videos, articles, and exercises by topic. The work done by gas in going from state B to C is double the work done by gas in going from state A to B. | Free Videos, Contact Us The gas is allowed to expand adiabatically to a temperature \[{{T}_{2}}\,\] by releasing the piston suddenly. (1) Heat \[\mathbf{(\Delta Q)}\]: It is the energy that is transferred between a system and its environment because of the temperature difference between them. Browse videos, articles, and exercises by topic. A certain diatomic gas has the same specific heats as an ideal gas but a slightly different equation of state:\[PV=R(T+\alpha {{T}^{2}}),\]\[\alpha =0.001{{K}^{-1}}.\]The temperature of the gas is raised from \[{{T}_{1}}=300K\]to \[{{T}_{2}}\] at constant pressure. This implies that, A mass of diatomic gas \[(\gamma =1.4)\]at a pressure of 2 atmospheres is compressed adiabatically so that its temperature rises from \[27{}^\circ C\] to \[927{}^\circ C\]. | Thermodynamics in physics follows the same basic principles, studying how thermal energy is converted into other different forms of energy. Media | Copyright © 2007-2020 | The pressure inside a tyre is 4 times that of atmosphere. The temperature of source and sink of a heat engine are \[127{}^\circ C\] and \[27{}^\circ C\] respectively. If the ratio of specific heats of this gas at constant pressure and at constant volume is 5/3, the final temperature of gas will be, question_answer43) In pressure-volume diagram, the isochoric, isothermal, isobaric and iso-entropic parts respectively, are. The temperature of the gas is (use ln 9 = 2 and\[R=\frac{25}{3}J/mol-K\]), question_answer77) A gas is expanded from volume \[{{V}_{0}}\] to \[2{{V}_{0}}\] under three different processes. Then, choose the correct option from the following. Thermodynamics is the field of physics that successfully explains the properties of matter visible in our everyday, ... CliffsNotes study guides are written by real teachers and professors, so no matter what you're studying, CliffsNotes can ease your homework headaches and help you score high on exams. Is the amount of heat is given to the gas is 2 liters sample of an ideal gas 70. During another process it does 25J of work and its temperature decreases by 5K that... 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