Physics Class 11 Solutions, MCQ, Notes, Book FREE PDF Download

14.1 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 of the string, M = 2.50 […]

13.1 Which of the following examples represent periodic motion? 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 center of mass. d. An arrow released from […]

12.1 Estimate the fraction of molecular volume to the actual volume occupied by oxygen gas at STP. Take the diameter of an oxygen molecule to be 3 Å. Solution : Diameter of an oxygen molecule, d = 3Å Radius, r = d/2 = 3/2 = 1.5 Å = 1.5 × 10–8 cm Actual volume occupied by […]

11.1 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, what is the rate of consumption of the fuel if its heat of combustion is 4.0 × 104 J/g? Solution : Water is flowing at a rate of […]

10.1 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 : Kelvin and Celsius scales are related as: TC = TK – 273.15 … (i) Celsius and Fahrenheit scales are related as: TF = (9/5)TC + 32   ….(ii) For neon: TK = 24.57 K […]

9.1  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 […]

8.1 8.2 Figure 8.9 shows the strain-stress curve for a given material. What are (a) Young’s modulus and (b) approximate yield strength for this material? Answer :  8.3 The stress-strain graphs for materials A and B are shown in Fig. 8.10. (a) Which of the materials has the greater Young’s modulus? (b) Which of the […]

2025 Sample Paper Class 11 Physics 2025 2023 – 24 Sample Paper Class 11 Physics SET 1 – 2023-24 Sample Paper Class 11 Physics SET 2 – 2023-24

MCQ Physics Class 11 MCQ Physics Class 11 Solutions Physics Class 11 Question Answer Physics Class 11 Important Questions Physics Class 11 Important Questions Physics Class 11 Notes Physics Class 11 Notes Physics Class 11 Sample Papers Physics Class 11 FREE PDF Download Sample Papers Physics Class 11 Previous Year Question Paper Physics Class 11 […]

Chapter 1 – Units and Measurement Chapter 2 – Motion in a Straight Line Chapter 3 – Motion in a Plane Chapter 4 – Laws of Motion Chapter 5 – Work, Energy And Power Chapter 6 – Systems of Particles and Rotational Motion Chapter 7 – Gravitation Chapter 8 – Mechanical Properties of Solids Chapter […]

Part 1 Chapter 1 – Units and Measurement Chapter 2 – Motion in a Straight Line Chapter 3 – Motion in a Plane Chapter 4 – Laws of Motion Chapter 5 – Work, Energy and Power Chapter 6 – Systems of Particles and Rotational Motion Chapter 7 – Gravitation Part 2 Chapter 8 – Mechanical […]

2023-24 CBSE Class 11 Physics Unit Test Paper I – (2023-2024) CBSE Class 11 Physics Unit Test Paper II – (2023-2024) CBSE Class 11 Physics Term I Exam Question Paper – (2023- 2024) ↑ Solution CBSE Class 11 Physics Final Term Question Paper – (2023- 2024) ↑ Solution 2019-20 CBSE Class 11 Physics Year 2019 – […]

NCERT Book for Class 11 Physics Part 1 Chapter 1 – Units and Measurement Chapter 2 – Motion in a Straight Line Chapter 3 – Motion in a Plane Chapter 4 – Laws of Motion Chapter 5 – Work, Energy And Power Chapter 6 – Systems of Particles and Rotational Motion Chapter 7 – Gravitation […]

Physics Syllabus Session 2019-20

Units and Measurement Notes Chapter 1 Physics Class 11 Motion in a Straight Line Notes Chapter 2 Physics Class 11 Motion in a Plane Notes Chapter 3 Physics Class 11 Law of Motion Notes Chapter 4 Physics Class 11 Work, Energy and Power Notes Chapter 5 Physics Class 11 Systems of Particles and Rotational Motion […]

Notes For All Chapters Physics Class 11 CBSE • Waves Wave is a form of disturbance which travels through a material medium due to the repeated f periodic motion of the particles of the medium about their mean positions without any actual transportation of matter. • Characteristics of wave The characteristics of waves are as […]

Notes For All Chapters Physics Class 11 CBSE • Periodic Motion Motions, processes or phenomena, which repeat themselves at regular intervals, are called periodic. • Oscillatory Motion The motion of a body is said to be oscillatory motion if it moves to and fro about a fixed point after regular intervals of time. The fixed […]

Notes For All Chapters Physics Class 11 CBSE • The kinetic theory was developed in the nineteenth century by Maxwell, Boltzman and others. Kinetic theory explains the behaviour of gases based on the idea that the gas consists of rapidly moving atoms or molecules. • Ideal Gas An ideal gas or a perfect gas is […]

Notes For All Chapters Physics Class 11 CBSE • The branch of physics which deals with the study of transformation of heat into other forms of energy and vice-versa is called thermodynamics. Thermodynamics is a macroscopic science. It deals with bulk systems and does not go into the molecular constitution of matter. • A collection […]

Notes For All Chapters Physics Class 11 CBSE • Heat is the form of energy transferred between two (or more) systems or a system and its surroundings by virtue of temperature difference. The SI unit of heat energy transferred is expressed in joule (J). In CGS system, unit of heat is calorie and kilocalorie (kcal). […]

Notes For All Chapters Physics Class 11 CBSE • Fluids are the sustances which can flow e.g., liquids and gases. It does not possess definite shape. • When an object is submerged in a liquid at rest, the fluid exerts a force on its surface normally. It is called thrust of the liquid. • Pressure The […]

Notes For All Chapters Physics Class 11 CBSE • Inter molecular Force In a solid, atoms and molecules are arranged in such a way that each molecule is acted upon by the forces due to the neighbouring molecules. These forces are known as inter molecular forces. • Elasticity The property of the body to regain […]

Notes For All Chapters Physics Class 11 CBSE • Kepler’s Laws of Planetary Motion Johannes Kepler formulated three laws which describe planetary motion. They are as follows: (i) Law of orbits. Each planet revolves around the sun in an elliptical orbit with the sun at one of the foci of the ellipse. (ii) Law of […]

Notes For All Chapters Physics Class 11 CBSE • A rigid body is a body with a perfectly definite and unchanging shape. The distances between all pairs of particles of such a body do not change. • Centre of Mass For a system of particles, the centre of mass is defined as that point where […]

Notes For All Chapters Physics Class 11 CBSE • Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of applied force. It is measured by the product of the force and the distance moved in the direction of the force, i.e., […]

Notes For All Chapters Physics Class 11 CBSE • Dynamics is the branch of physics in which we study the motion of a body by taking into consideration the cause i.e., force which produces the motion. • Force Force is an external cause in the form of push or pull, which produces or tries to produce […]

Notes For All Chapters Physics Class 11 CBSE • Motion in a plane is called as motion in two dimensions e.g., projectile motion, circular motion etc. For the analysis of such motion our reference will be made of an origin and two co-ordinate axes X and Y. • Scalar and Vector Quantities Scalar Quantities. The physical […]

Notes For All Chapters Physics Class 11 CBSE • Introduction Motion is one of the significant topics in physics. Everything in the universe moves. It might only be a small amount of movement and very-very slow, but movement does happen. Even if you appear to be standing still, the Earth is moving around the sun, […]

Notes For All Chapters Physics Class 11 CBSE Measurement The process of measurement is basically a comparison process. To measure a physical quantity, we have to find out how many times a standard amount of that physical quantity is present in the quantity being measured. The number thus obtained is known as the magnitude and […]

Notes For All Chapters Physics Class 11 Science Science is a systematic and organised attempt to acquire knowledge about the surroundings through observations, experiments and verifications. Scientific Method Several inter-related steps are involved in scientific method. Some of the most significant steps are as follows: 1. The systematic observations 2. Reasoning 3. Mathematical modelling 4. […]

Units And Measurement MCQ Units And Measurement Class 11 Motion In A Straight Line MCQ Motion In A Straight Line Class 11 Motion In A Plane MCQ Motion In A Plane Class 11 Laws Of Motion MCQ Laws Of Motion Class 11 Work Energy And Power MCQ Work Energy And Power Class 11 System Of […]