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Grand Master Physics·Stage 3 Intermediate·Unit 8 Thermodynamics·Lesson 075 Heat, work and internal energy

5/7Work done by/on a thermodynamic system

COMING SOON · TOPIC 5 OF 7Work done by/on a thermodynamic systemNCERTNEETJEE MainJEE AdvThis topic video is in production. Lesson 75 of 171: Heat, work and internal energy.The full course opens in January 2027.
Next topic ▶All topics of this lessonNCERTNEETJEE MainJEE Adv P-08-01-T169

Lesson 075: its 7 topics

I'm preparing for
  1. 1Thermal equilibriumTopic 1 of 7NCERTNEETJEE MainComing soon
  2. 2Concept of temperature (from the zeroth law)Topic 2 of 7NCERTNEETJEE MainComing soon
  3. 3Zeroth law of thermodynamicsTopic 3 of 7NCERTNEETJEE MainComing soon
  4. 4Heat as a mode of energy transfer (energy in transit; not a state variable)Topic 4 of 7NCERTNEETJEE MainJEE AdvComing soon
  5. 5Work done by/on a thermodynamic systemTopic 5 of 7NCERTNEETJEE MainJEE AdvComing soon
  6. 6Internal energy (state variable)Topic 6 of 7NCERTNEETJEE MainJEE AdvComing soon
  7. 7Thermodynamic state variables (intensive and extensive)Topic 7 of 7NCERTComing soon

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← Previous topicHeat as a mode of energy transfer (energy in transit; not a state variable)Next topic →Internal energy (state variable)
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1Basics1/14

Foundation · Maths for Physics

001Proportion and scalingSoon
002Graphs a physicist readsSoon
003Trigonometry for physicsSoon
004Vectors I: adding and resolvingSoon
005Vectors II: dot and cross productSoon
006Differentiation as a rate of changeSoon
007Integration as accumulationSoon
008Exponentials, logs and approximationsSoon

Unit 1 · Physics and Measurement

009Physical quantities and SI units▶ Free
010Dimensions of physical quantitiesSoon
011Dimensional analysis and its usesSoon
012Least count, accuracy and precisionSoon
013Errors in measurementSoon
014Significant figuresSoon
2Foundation0/30

Unit 2 · Kinematics

015Frame of reference, distance and displacementSoon
016Speed and velocitySoon
017Acceleration and the equations of motionSoon
018Reading motion graphsSoon
019Motion under gravitySoon
020Relative velocity in one dimensionSoon
021Motion in a planeSoon
022Projectile motionSoon
023Projectiles from a height and on an inclineSoon
024Relative velocity in two dimensionsSoon
025Uniform circular motionSoon

Unit 3 · Laws of Motion

026Force and inertia: Newton's first lawSoon
027Momentum and Newton's second lawSoon
028Newton's third lawSoon
029Free-body diagrams and equilibriumSoon
030Connected bodiesSoon
031Friction I: static and kineticSoon
032Friction II: rolling friction and blocks on blocksSoon
033Conservation of linear momentumSoon
034Dynamics of circular motionSoon
035Vehicles on level and banked roadsSoon
036Accelerated frames and pseudo forceSoon

Unit 4 · Work, Energy and Power

037Work by constant and variable forcesSoon
038Kinetic energy and the work–energy theoremSoon
039Potential energy and the springSoon
040Conservative forces and conservation of energySoon
041PowerSoon
042Motion in a vertical circleSoon
043Collisions in one dimensionSoon
044Collisions in two dimensionsSoon
3Intermediate0/53

Unit 5 · Rotational Motion

045Centre of massSoon
046Motion of the centre of massSoon
047Torque and angular momentumSoon
048Conservation of angular momentumSoon
049Moment of inertia and radius of gyrationSoon
050Moments of inertia of simple bodiesSoon
051Equilibrium of rigid bodiesSoon
052Rotation about a fixed axisSoon
053Rolling without slippingSoon
054Collisions with rigid bodiesSoon

Unit 6 · Gravitation

055The universal law of gravitationSoon
056Acceleration due to gravitySoon
057Kepler's lawsSoon
058Gravitational potential energySoon
059Gravitational field and potentialSoon
060Escape velocitySoon
061SatellitesSoon

Unit 7 · Properties of Solids and Liquids

062Elasticity and Hooke's lawSoon
063Moduli of elasticitySoon
064Pressure in fluids and Pascal's lawSoon
065BuoyancySoon
066Flow of fluidsSoon
067Bernoulli's principleSoon
068ViscositySoon
069Surface tensionSoon
070Capillary riseSoon
071Temperature, heat and thermal expansionSoon
072Calorimetry and latent heatSoon
073Heat transferSoon
074Cooling and blackbody radiationSoon

Unit 8 · Thermodynamics

075Heat, work and internal energySoon
  1. 1Thermal equilibriumSoon
  2. 2Concept of temperature (from the zeroth law)Soon
  3. 3Zeroth law of thermodynamicsSoon
  4. 4Heat as a mode of energy transfer (energy in transit; not a state variable)Soon
  5. 5Work done by/on a thermodynamic systemSoon
  6. 6Internal energy (state variable)Soon
  7. 7Thermodynamic state variables (intensive and extensive)Soon
076The first law of thermodynamicsSoon
077Specific heats of gasesSoon
078Thermodynamic processesSoon
079The second lawSoon
080Heat engines and the Carnot engineSoon

Unit 9 · Kinetic Theory of Gases

081The ideal gasSoon
082Pressure from moving moleculesSoon
083Temperature and rms speedSoon
084Degrees of freedom and equipartitionSoon
085Mean free pathSoon

Unit 10 · Oscillations and Waves

086Periodic motionSoon
087Simple harmonic motionSoon
088The spring–mass systemSoon
089Energy in SHMSoon
090The simple pendulumSoon
091Damped and forced oscillationsSoon
092Wave motionSoon
093The progressive wave equationSoon
094Superposition and reflection of wavesSoon
095Standing waves in strings and pipesSoon
096BeatsSoon
097The Doppler effectSoon
4Advanced0/47

Unit 11 · Electrostatics

098Electric chargeSoon
099Coulomb's law and superpositionSoon
100The electric fieldSoon
101The electric dipoleSoon
102Electric flux and Gauss's lawSoon
103Applications of Gauss's lawSoon
104Electric potentialSoon
105Equipotentials and potential energySoon
106Conductors and dielectricsSoon
107CapacitorsSoon
108The parallel-plate capacitorSoon

Unit 12 · Current Electricity

109Electric current and drift velocitySoon
110Ohm's law and resistanceSoon
111Resistivity and temperatureSoon
112Electrical energy and powerSoon
113Resistors in series and parallelSoon
114Cells, emf and internal resistanceSoon
115Kirchhoff's lawsSoon
116Wheatstone bridge and metre bridgeSoon

Unit 13 · Magnetic Effects of Current and Magnetism

117Force on a moving chargeSoon
118The Biot–Savart lawSoon
119Ampère's lawSoon
120Force on a current-carrying wireSoon
121Torque on a current loopSoon
122The moving-coil galvanometerSoon
123Magnetic dipoles and the bar magnetSoon
124Magnetic materialsSoon

Unit 14 · Electromagnetic Induction and Alternating Currents

125Faraday's lawSoon
126Lenz's law and eddy currentsSoon
127Self and mutual inductanceSoon
128RC, LR and LC circuitsSoon
129Alternating currentSoon
130The LCR series circuitSoon
131AC generator and transformerSoon

Unit 15 · Electromagnetic Waves

132Electromagnetic wavesSoon
133The electromagnetic spectrumSoon

Unit 16 · Optics

134Reflection and spherical mirrorsSoon
135Refraction and total internal reflectionSoon
136Refraction at spherical surfacesSoon
137MagnificationSoon
138Power and combinations of lensesSoon
139The prismSoon
140Optical instrumentsSoon
141Wavefronts and Huygens' principleSoon
142InterferenceSoon
143DiffractionSoon
144PolarisationSoon
5Grand Master0/27

Unit 17 · Dual Nature of Matter and Radiation

145The photoelectric effectSoon
146Einstein's photoelectric equationSoon
147Matter wavesSoon

Unit 18 · Atoms and Nuclei

148Rutherford's model of the atomSoon
149The Bohr modelSoon
150X-raysSoon
151The nucleusSoon
152Mass defect and binding energySoon
153Fission and fusionSoon
154RadioactivitySoon

Unit 19 · Electronic Devices

155SemiconductorsSoon
156The p-n junction diodeSoon
157The diode as a rectifierSoon
158LED, photodiode and solar cellSoon
159The Zener diodeSoon
160Logic gatesSoon

Unit 20 · Experimental Skills

161Vernier calipers and screw gaugeSoon
162Experiment: the simple pendulumSoon
163Metre scale and Young's modulusSoon
164Surface tension and viscositySoon
165The resonance tubeSoon
166Specific heatSoon
167Metre bridge, post office box and Ohm's lawSoon
168Galvanometer by half deflectionSoon
169Mirrors and lensesSoon
170Prism and glass slabSoon
171Diodes and componentsSoon
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