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Laws of Thermodynamics — JEE Main & Advanced Physics PYQs

51 previous year questions from Laws of Thermodynamics with answers and solutions. Numbered list, year tags, and one-tap solutions — built for serious JEE / NEET practice.

51 questionsPhysicsSolutions on every page
1

A paddle wheel is coupled to a mass of 12 kg via fixed frictionless pulleys. The paddle is immersed in a liquid of heat capacity 4200 J K ⁻¹ enclosed in an adiabatic container. Sup

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 2

A 100 kg block is started with a speed of 2.0 m s ⁻¹ on a long, rough belt maintained in a fixed horizontal position. The coefficient of kinetic friction between the block and the

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Water at 15^ C is contained inside a closed, thermally insulated copper vessel. The temperature increases to 17^ C after the vessel is vigorously shaken for 15 minutes. The mass of

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 4

Water at 15^ C is contained inside a closed, thermally insulated copper vessel. The temperature increases to 17^ C after the vessel is vigorously shaken for 15 minutes. The mass of

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 5

A 100 kg block is started with a speed of 2.0 m s ⁻¹ on a long, rough belt fixed in a horizontal position. The coefficient of kinetic friction between the block and the belt is 0.2

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A gas undergoes a process where its pressure varies linearly with volume from 10 kPa , 200 cc to 50 kPa , 50 cc . Assuming no heat is added to or extracted from the gas, find the c

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Determine the change in the internal energy of a gas confined in a rigid container when 100 J of heat is provided to it.

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An ideal gas is taken from an initial state i to a final state f such that the ratio of its pressure to its absolute temperature is maintained constant. Determine the work done by

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As shown in the figure, a system undergoes the process abc , absorbing 80 J of heat while performing 30 J of work. If the system performs 10 J of work during the process adc , calc

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As shown in the figure, a gas can be taken from state A to state B via three different paths. Determine the work done by the gas in each of the three paths ( AB , ACB , and ADB res

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To transition a system from state A to state B along the path ACB as shown in the figure, 50 cal of heat must be supplied. Determine the amount of heat that needs to be supplied to

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Determine the heat absorbed by a system undergoing the cyclic process depicted in the figure.

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A gas undergoes a cyclic process ABCA as depicted in the figure. If 2.4 cal of heat is supplied during this process, what is the value of J ?

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As illustrated in the figure, a substance undergoes the process abc . Determine the value of J if 2625 cal of heat is supplied to the system and the internal energy of the substanc

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A gas undergoes a thermodynamic process along the path AB as depicted in the figure. Determine the change in the internal energy of the system given that 70 cal of heat is extracte

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A gas has an internal energy given by the relation U = 1.5 pV . The gas expands from 100 cm ^3 to 200 cm ^3 against a constant pressure of 1.0 10^5 Pa . Determine the heat absorbed

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A gas is confined within a cylindrical vessel equipped with a frictionless piston. The gas is heated slowly for some time. Throughout the process, 10 J of heat is added, and the pi

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Through fixed frictionless pulleys, a paddle wheel is connected to a 12 kg mass. The paddle is immersed in a liquid of heat capacity 4200 J K ⁻¹ located in an adiabatic container.

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 19

Water at 15^ C is contained inside a closed, thermally insulated copper vessel. The temperature increases to 17^ C after the vessel is vigorously shaken for 15 minutes. The mass of

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 20

A 100 kg block is given an initial speed of 2.0 m s ⁻¹ on a long, rough belt kept fixed in a horizontal position. The coefficient of kinetic friction between the block and the belt

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 21

Initially, a gas is at a pressure of 100 kPa with a volume of 2.0 m ^3 . While keeping the pressure constant, the volume is changed from 2.0 m ^3 to 2.5 m ^3 . Subsequently, the vo

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An ideal gas sample of 2.0 mol undergoes the cyclic process ABCA as shown in the figure. A total of 1200 J of heat is withdrawn from the sample during the cycle. Determine the work

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Initially, a gas is at a pressure of 100 kPa with a volume of 2.0 m ^3 . While keeping the pressure constant, the volume is changed from 2.0 m ^3 to 2.5 m ^3 . Subsequently, the vo

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The figure displays the variation of the internal energy U with the volume V of 2.0 mol of an ideal gas in a cyclic process abcda . The temperatures of the gas at b and c are 500 K

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Determine the increase in the internal energy of 10 g of water as it is heated from 0^ C to 100^ C and subsequently transformed into steam at 100 kPa . The density of the steam is

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Determine the change in the internal energy of 2 kg of water when it is heated from 0^ C to 4^ C . The specific heat capacity of water is 4200 J kg ⁻¹ K ⁻¹ , while its densities at

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As depicted in the figure, a cylindrical tube of volume V having adiabatic walls contains an ideal gas. The internal energy of this ideal gas is given by 1.5 nRT . A fixed diatherm

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A cylindrical tube of volume V having adiabatic walls contains an ideal gas. The internal energy of this ideal gas is given by 1.5 nRT . A fixed diathermic wall divides the tube in

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A gas undergoes a process where its pressure varies linearly with volume from 10 kPa , 200 cc to 50 kPa , 50 cc . Determine the work done by the gas.

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A cylindrical tube of volume V having adiabatic walls contains an ideal gas. The internal energy of this ideal gas is given by 1.5 nRT . A fixed diathermic wall divides the tube in

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An adiabatic vessel of total volume V is partitioned into two equal parts by a fixed, conducting separator. The left part holds one mole of an ideal gas ( U = 1.5 nRT ) and the rig

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A cylindrical tube of volume V having adiabatic walls contains an ideal gas. The internal energy of this ideal gas is given by 1.5 nRT . A fixed diathermic wall divides the tube in

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An adiabatic vessel of total volume V is partitioned into two equal parts by a fixed, conducting separator. The left part holds one mole of an ideal gas ( U = 1.5 nRT ) and the rig

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An adiabatic vessel of total volume V is partitioned into two equal parts by a fixed, conducting separator. The left part holds one mole of an ideal gas ( U = 1.5 nRT ) and the rig

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 35

An adiabatic vessel of total volume V is partitioned into two equal parts by a fixed, conducting separator. The left part holds one mole of an ideal gas ( U = 1.5 nRT ) and the rig

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 36

An adiabatic vessel of total volume V is partitioned into two equal parts by a fixed, conducting separator. The left part holds one mole of an ideal gas ( U = 1.5 nRT ) and the rig

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 37

As shown in the figure, a paddle wheel is linked to a mass of 12 kg by fixed frictionless pulleys. The paddle is submerged in a liquid with a heat capacity of 4200 J K ⁻¹ , which i

Concepts Of Physics MCQ Edition [Volume 2] Solution View → 38

Consider the provided figure. Suppose U₁ and U₂ denote the changes in internal energy of the system during processes A and B , respectively. Which of the following is correct?

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Two processes A and B on a system are illustrated in the figure. Let Q₁ and Q₂ denote the heat given to the system during processes A and B , respectively. Then

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The first law of thermodynamics is based on the principle of

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A gas is enclosed in a metallic cylinder fitted with a piston. The piston is abruptly moved inward to compress the gas and is held at this position. As time elapses, the pressure o

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When heat is provided to an ideal gas during an isothermal process,

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Analyze the two statements below. (A) When heat is supplied to a system, its temperature must rise. (B) When a system does positive work during a thermodynamic process, its volume

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As depicted in the figure, an ideal gas transitions from state i to state f . The work done by the gas during this process

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A process undergone by a system is depicted in the figure. During this process, the work done by the system

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Two processes on a system are illustrated in the figure. The volumes of the initial states are identical for both processes, and the volumes of the final states are also identical.

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In a process carried out on a system, the initial pressure and volume are identical to the final pressure and volume.

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A system transitions from an initial state p₁, V₁ to a final state p₂, V₂ via two distinct methods. If Q and W respectively denote the heat supplied to the system and the work done

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During a particular process, both the pressure p and the volume V of an ideal gas increase.

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Consider the given figure. Suppose U₁ and U₂ represent the change in internal energy for processes A and B , respectively. Let Q denote the net heat supplied to the system in the c

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An ideal gas undergoes a process in which its internal energy decreases by an amount equal to the work done by the system.

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