CBSE Class 11 Physics

CBSE Class 11 Physics: The 50 “Must-Do” Topics to Ace Your Finals!

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CBSE Class 11 Physics

The Ultimate 50 Topic Masterlist

2025-26 Syllabus
Next Steps: ➜ Class 12 Physics ➜ Class 10 Science

Kinematics & Laws of Motion

Focus: Derivations & Diagrams

  1. Dimensional Analysis: Checking correctness and deriving relationships (e.g., Time Period of Pendulum).
  2. Projectile Motion: Derivations for Time of Flight, Max Height, and Horizontal Range. Must Do
  3. Vectors: Parallelogram Law of Vector Addition (Resultant Magnitude & Direction).
  4. Banking of Roads: Derivation of safe velocity with and without friction. 5 Marks
  5. Friction: Laws of limiting friction and Angle of Repose.
  6. Conservation of Momentum: Recoil of gun and collision problems.
  7. Circular Motion: Centripetal acceleration derivation \(\frac{v^2}{r}\).

Work, Energy & System of Particles

Focus: Theorems & Conservation

  1. Work-Energy Theorem: Proof for variable and constant force.
  2. Collisions: Elastic collision in 1D (Deriving final velocities). Long Answer
  3. Potential Energy: Spring Potential Energy \(U = \frac{1}{2}kx^2\) graph and derivation.
  4. Center of Mass: Derivation for a two-particle system.
  5. Torque & Angular Momentum: Relation \(\tau = \frac{dL}{dt}\) and conservation law.
  6. Moment of Inertia: Theorems of Parallel and Perpendicular Axes (Applications on Ring/Disc).
  7. Rolling Motion: Kinetic Energy of rolling body.

Gravitation & Properties of Matter

Focus: Fluids & Gravity

  1. Variation of ‘g’: With Altitude (height) and Depth. Numerical
  2. Escape Velocity: Derivation \(v_e = \sqrt{2gR}\).
  3. Orbital Velocity: Derivation and Time period of satellite.
  4. Stress-Strain Curve: Hooke’s Law, Yield Point, and Breaking Point.
  5. Bernoulli’s Theorem: Statement, Proof, and Applications (Venturimeter). 5 Marks
  6. Pascal’s Law: Hydraulic Lift working principle.
  7. Surface Tension: Ascent formula (Capillarity) and Excess pressure in a drop/bubble.
  8. Stokes’ Law: Terminal Velocity derivation.

Thermodynamics & Kinetic Theory

Focus: Processes & Laws

  1. Thermal Expansion: Relation between \(\alpha, \beta, \gamma\).
  2. Newton’s Law of Cooling: Statement and Cooling Curve.
  3. First Law of Thermodynamics: Application to Isothermal and Adiabatic processes.
  4. Work Done: Derivation for Work done in Isothermal and Adiabatic expansion. Must Do
  5. Mayer’s Relation: Derivation of \(C_p – C_v = R\).
  6. Kinetic Theory: Assumptions and Pressure equation \(P = \frac{1}{3}\rho v^2_{rms}\).
  7. Degrees of Freedom: Relation with specific heat ratio \(\gamma\) for Mono/Di/Tri-atomic gases.

Oscillations & Waves

Focus: SHM & Sound

  1. SHM: Displacement, Velocity, and Acceleration equations.
  2. Simple Pendulum: Time period derivation \(T = 2\pi\sqrt{\frac{l}{g}}\).
  3. Energy in SHM: Kinetic and Potential energy variation graphs.
  4. Waves: Newton’s Formula and Laplace Correction for speed of sound. Important
  5. Standing Waves: Nodes and Antinodes in Stretched Strings and Organ Pipes.
  6. Beats: Formation and beat frequency.

Asterisk Classes: Final Exam Strategy

  • The 5-Mark Rule: Usually, one long answer comes from Bernoulli’s Principle (Fluids) or Projectile Motion (Kinematics). Master these derivations.
  • Numerical Weightage: Thermodynamics and Gravitation have the highest density of formula-based numericals. Keep a formula sheet ready.
  • Diagrams: In Stress-Strain curve and Capillarity, the diagram carries 1-2 marks. Draw neatly with a pencil.
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