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Free, original, step-by-step NCERT Solutions for Class 11 Physics, matching the current 2026-27 CBSE syllabus.
Each chapter below is solved question by question, in the order it appears in the textbook, so you can follow along page by page instead of jumping between sites. Click a chapter's Solutions link for the full worked answers, Extra Questions for additional practice beyond the textbook, and Revision Notes for a quick summary before a test.
Chapter 1: Units and Measurements
Class 11 Physics Chapter 2, Units and Measurements, is where the CBSE board syllabus formalises the language every later chapter depends on: SI units, significant figures, error analysis, and dimensional analysis. Board papers routinely draw at least one question from this chapter, most often on dimensional consiste...
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Chapter 2: Motion in a Straight Line – Free PDF Download
Motion in a Straight Line is the first kinematics chapter of Class 11 Physics and lays the foundation for every motion topic that follows, from Motion in a Plane through Laws of Motion. It builds the core vocabulary of mechanics – displacement, velocity, acceleration, and the equations of uniformly accelerated motio...
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Chapter 3: Motion in a Plane – Free PDF Download
Motion in a Plane introduces vectors and uses them to describe two-dimensional motion – from resolving forces and displacements into components, to working out the range and maximum height of a projectile, to finding the centripetal acceleration of an object moving in a circle. It is one of the highest-weightage cha...
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Chapter 4: Laws of Motion – Free PDF Download
Newton's three laws of motion form the backbone of classical mechanics, and Chapter 4 builds them into practical tools—momentum conservation, impulse, static and kinetic friction, and the dynamics of circular motion (banking of roads, whirling stones, apparent weight in a lift). Every CBSE board paper draws at least...
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Chapter 5: Work, Energy and Power – Free PDF Download
Work, Energy and Power builds directly on the Laws of Motion by asking not just how a force changes motion, but how much effort (work) it takes and how quickly that effort can be delivered (power). This chapter introduces the work-energy theorem, potential and kinetic energy, the law of conservation of mechanical en...
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Chapter 6: System of Particles and Rotational Motion – Free PDF Download
Chapter 6 of Class 11 Physics, System of Particles and Rotational Motion, moves beyond treating objects as single points and shows how real, extended bodies behave – through the centre of mass, torque, angular momentum, moment of inertia, and the dynamics of rotation about a fixed axis. It is one of the most calcula...
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Chapter 7: Gravitation – Free PDF Download
Question: (a) You can shield a charge from electrical forces by putting it inside a hollow conductor. Can you shield a body from the gravitational influence of nearby matter by putting it inside a hollow sphere or by some other means? (b) An astronaut inside a small spaceship orbiting around the earth cannot detect ...
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Chapter 8: Mechanical Properties of Solids – Free PDF Download
Question: A steel wire of length 4.7 m and cross-sectional area 3.0 × 10-5 m2 stretches by the same amount as a copper wire of length 3.5 m and cross-sectional area 4.0 × 10-5 m2 under a given load. What is the ratio of the Young's modulus of steel to that of copper? Solution: Since both wires carry the same load F ...
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Chapter 9: Mechanical Properties of Fluids – Free PDF Download
Explain why (a) The blood pressure in humans is greater at the feet than at the brain. (b) Atmospheric pressure at a height of about 6 km decreases to nearly half of its value at the sea level, though the height of the atmosphere is more than 100 km. (c) Hydrostatic pressure is a scalar quantity even though pressure...
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Chapter 10: Thermal Properties of Matter – Free PDF Download
Question: The triple points of neon and carbon dioxide are 24.57 K and 216.55 K respectively. Express these temperatures on the Celsius and Fahrenheit scales. Solution: Using T(°C) = T(K) − 273.15 and T(°F) = (9/5)T(°C) + 32:
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Chapter 11: Thermodynamics – Free PDF Download
Question: A geyser heats water flowing at the rate of 3.0 litres per minute from 27°C to 77°C. If the geyser operates on a gas burner, and the gas burner has a heat of combustion of 4.0 × 104 J/g, what is the rate of consumption of the fuel, if the heat lost to the surroundings is neglected? Solution: Mass of water ...
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Chapter 12: Kinetic Theory – Free PDF Download
Question: Estimate the fraction of the molecular volume to the actual volume occupied by oxygen gas at STP. Take the diameter of an oxygen molecule to be 3 Å. Solution: Radius of one O₂ molecule, r = 1.5 Å = 1.5 × 10-10 m. Volume of one molecule, v = (4/3)πr³ = (4/3) × 3.1416 × (1.5 × 10-10)³ = 1.414 × 10-29 m³. At ...
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Chapter 13: Oscillations – Free PDF Download
(a) A swimmer completing one (return) trip from one bank of a river to the other and back. (b) A freely suspended bar magnet displaced from its N-S direction and released. (c) A hydrogen molecule rotating about its centre of mass. (d) An arrow released from a bow. Solution: A motion is periodic only if it repeats it...
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Chapter 14: Waves – Free PDF Download
Question: A string of mass 2.50 kg is under a tension of 200 N. The length of the stretched string is 20.0 m. If the transverse jerk is struck at one end of the string, how long does the disturbance take to reach the other end? Solution: Mass per unit length, μ = 2.50 kg / 20.0 m = 0.125 kg/m. Speed of a transverse ...
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| Chapter | NCERT Solutions | Revision Notes | Extra Questions (HOTS) |
|---|---|---|---|
| Ch 1: Units and Measurements | Solutions | Revision Notes | Extra Questions |
| Ch 2: Motion in a Straight Line – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 3: Motion in a Plane – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 4: Laws of Motion – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 5: Work, Energy and Power – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 6: System of Particles and Rotational Motion – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 7: Gravitation – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 8: Mechanical Properties of Solids – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 9: Mechanical Properties of Fluids – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 10: Thermal Properties of Matter – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 11: Thermodynamics – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 12: Kinetic Theory – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 13: Oscillations – Free PDF Download | Solutions | Revision Notes | Extra Questions |
| Ch 14: Waves – Free PDF Download | Solutions | Revision Notes | Extra Questions |
Also see the Class 11 NCERT Books catalog for the official textbook PDF.
Frequently Asked Questions
Are these Class 11 Physics solutions updated for the 2026-27 syllabus?
Yes, every chapter listed above is checked against the current NCERT Physics textbook for the 2026-27 CBSE session.
Do you also have Extra Questions and Revision Notes for Class 11 Physics?
Yes — wherever published, Extra Questions and/or Revision Notes are linked next to the matching chapter above.
Are these Class 11 Physics NCERT Solutions available in Hindi medium?
Hindi-medium solutions for Class 11 Physics are being added progressively. In the meantime, this English-medium solution can be used alongside your Hindi-medium NCERT textbook, since the questions and chapter numbering are identical.