Class 11 Physics - Full Conceptual Notes
Chapter 1: Physical World
- Physics is the study of nature and natural phenomena.
- Fundamental forces: Gravitational, Electromagnetic, Strong Nuclear, Weak Nuclear.
- Physical laws are universal and expressed mathematically.
- Physics and technology are closely related.
- Goal: Unification of forces.
Chapter 2: Units and Measurements
- Fundamental Quantities: Length (m), Mass (kg), Time (s), etc.
- Derived Quantities: Speed, Force, Energy, etc.
- Errors: Systematic, Random, Absolute, Relative.
- Significant Figures: Rules for accuracy in calculations.
- Dimensional Analysis: Used to verify formulas and convert units.
Chapter 3: Motion in a Straight Line
- Motion described using position, displacement, velocity, acceleration.
- Scalars vs Vectors.
- Graphical Analysis: x-t, v-t, and a-t graphs.
- Equations of Motion (uniform acceleration):
1. v = u + at
2. s = ut + 1/2 at^2
3. v^2 = u^2 + 2as
Chapter 4: Motion in a Plane
Chapter 1: Physical World
- Physics is the study of nature and natural phenomena.
- Fundamental forces: Gravitational, Electromagnetic, Strong Nuclear, Weak Nuclear.
- Physical laws are universal and expressed mathematically.
- Physics and technology are closely related.
- Goal: Unification of forces.
Chapter 2: Units and Measurements
- Fundamental Quantities: Length (m), Mass (kg), Time (s), etc.
- Derived Quantities: Speed, Force, Energy, etc.
- Errors: Systematic, Random, Absolute, Relative.
- Significant Figures: Rules for accuracy in calculations.
- Dimensional Analysis: Used to verify formulas and convert units.
Chapter 3: Motion in a Straight Line
- Motion described using position, displacement, velocity, acceleration.
- Scalars vs Vectors.
- Graphical Analysis: x-t, v-t, and a-t graphs.
- Equations of Motion (uniform acceleration):
1. v = u + at
2. s = ut + 1/2 at^2
3. v^2 = u^2 + 2as
Chapter 4: Motion in a Plane
