Physics is the study of matter, energy, and the interactions between them. For WBCS Prelims, you need to focus on:

Important Topics:

• Motion & Force:

  • Newton’s Laws of Motion

  • Speed, Velocity, Acceleration

  • Friction and its applications

  • Circular Motion

• Work, Energy & Power:

  • Kinetic and Potential Energy

  • Conservation of Energy

  • Power units (Watt, Horsepower)

• Heat & Temperature:

  • Units of Temperature: Celsius, Fahrenheit, Kelvin

  • Expansion of solids, liquids, and gases

  • Heat Transfer: Conduction, Convection, Radiation

• Sound:

  • Nature of Sound Waves

  • Echo, SONAR, Doppler Effect

• Light:

  • Reflection & Refraction

  • Lenses & Mirrors

  • Dispersion of Light (Rainbow Formation)

  • Human Eye & Defects

• Electricity & Magnetism:

  • Electric Current & Circuits

  • Ohm’s Law

  • Magnetic Fields, Electromagnetism

  • Applications: Electric Bulb, Transformer, Generator, Motor

• Modern Physics:

  • Nuclear Energy: Fission & Fusion

  • X-Rays, Lasers

  • Satellites & Space Technology