Summary

• Description:

  The PDF document comprises Bungoma South Cluster Physics Paper 1 2026 Pre-Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a KCSE Form 4 Physics Paper 1 examination.

  This paper tests core mechanics, properties of matter, thermal physics, fluid dynamics, and thermodynamics through theoretical questions and numerical applications. It evaluates experimental verification of physical laws and real-world engineering concepts.

  • Month Administered: July 2026
  • Duration: 2½ Hours
  • Total Marks: 80 Marks
  • Number of Questions: 18 Questions
  • Structure: Section A (25 marks, short structured questions 1–13) and Section B (55 marks, structured comprehensive questions 14–18).

  It covers the following topics:

  • Section A:
    • Vernier callipers measurements and correcting for negative zero errors
    • Thermal conductivity in metals of different cross-sectional areas
    • Factors affecting surface tension of liquids
    • Volume and burette measurements using uniform liquid drops
    • Particulate nature of matter and Brownian motion in smoke cells
    • Turning effect of a force and moments
    • Work, energy, and power definitions and SI units
    • Machines: velocity ratio and mechanical advantage of a wheel and axle system
    • Fluid flow: Bernoulli's effect over flexible surfaces
    • Stability and states of equilibrium (neutral equilibrium)
    • Thermal expansion and heat transfer comparison between metals and wood
    • Conservation of mechanical energy during free fall
    • Hooke's law and spring elasticity
  • Section B:
    • Gas laws: experimental verification and apparatus for Charles's law at constant pressure
    • Thermal physics: cooling curves, specific heat capacity in liquid state, melting and boiling points, and specific latent heat of fusion
    • Uniform circular motion: angular velocity, vertical circular motion, tension variations at top/bottom, and centrifugal water extraction in spinners
    • Fluid pressure and mechanics: Pascal's principle, hydraulic braking systems, properties of brake fluids, linear momentum conservation in inelastic collisions, and Newton's third law in rotating water sprinklers
    • Floating and sinking: Archimedes' principle, upthrust on floating vs submerged bodies, density calculations, and calibration of hydrometers
• Length:

  10 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  PHYSICS
• Posted By:

  Caleb_Peter

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