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JEE Laws of Thermodynamics PYQs with Solutions

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

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About Laws of Thermodynamics PYQs

Laws of Thermodynamics has 51 previous year questions in the Quantrex Academy JEE Main & Advanced Physics bank. The 51 questions in this list come from Concepts Of Physics MCQ Edition [Volume 2] (51). Each question opens on its own page with the options, the correct answer and the worked solution where available.

JEE Laws of Thermodynamics PYQs with Solutions

About Laws of Thermodynamics PYQs

Laws of Thermodynamics questions with solutions

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.

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

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

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

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

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

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

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

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

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

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

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

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 ?

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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

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

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

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

Consider the provided figure. Suppose Δ U_1 and Δ U_2 denote the changes in internal energy of the system during processes A and B , respectively. Which of the following is

Two processes A and B on a system are illustrated in the figure. Let Δ Q_1 and Δ Q_2 denote the heat given to the system during processes A and B , respectively. Then

The first law of thermodynamics is based on the principle of

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

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

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

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

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

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

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

A system transitions from an initial state p_1, V_1 to a final state p_2, V_2 via two distinct methods. If Δ Q and Δ W respectively denote the heat supplied to the system and the

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

Consider the given figure. Suppose Δ U_1 and Δ U_2 represent the change in internal energy for processes A and B , respectively. Let Δ Q denote the net heat supplied to the system

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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