Summary

• Description:

  The MS Word document comprises BUNTRA Joint Examination Physics Paper 1 2025 Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It is a Kenya Certificate of Secondary Education (KCSE) Physics Paper 1 (232/1) (Theory) BUNTRA Joint Exams 2025 examination.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 18 (Section A: Questions 1–12; Section B: Questions 13–18)
  • Paper Structure: Two sections (A and B); answer all questions in both sections.
  • Marking Scheme: The marking scheme is in a different document.

  It covers the following topics:

  • Branches of physics (astronomy and related concepts)
  • Measurement and errors (micrometer screw gauge readings and zero error)
  • Surface tension and soap bubble behaviour
  • Heat transfer and temperature changes in liquids
  • Moments and equilibrium (tension in a string; centre of gravity)
  • Types of equilibrium (stability of a frustum of a cone)
  • Brownian motion and kinetic theory explanation
  • Molecular size estimation (oil drop experiment assumptions)
  • Pressure and gases (collapsing tin can experiment and atmospheric pressure)
  • Gas laws and absolute zero (pressure–temperature relationship and why absolute zero is unattainable)
  • Elasticity (spring modifications to change force–extension behaviour)
  • Motion under gravity (velocity–time graph for vertical projection and rebound)
  • Fluid dynamics (Bernoulli’s principle, viscosity effects on flow, continuity equation and flow rate calculations)
  • Thermometry (choosing suitable thermometers for low temperatures; liquid level changes in a cooling flask; calibrating a Celsius thermometer)
  • Machines (velocity ratio; inclined plane work, efficiency and friction)
  • Thermal physics (heat capacity vs specific heat capacity; heating curve, specific latent heat of fusion)
  • Flotation and density (upthrust effects on spring/weighing balances; density determination; hydrometer function and behaviour in salt solution)
  • Circular motion (angular velocity, centripetal force relations, motion in a circle, and tangent path when a string breaks)
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  PHYSICS
• Posted By:

  Caleb_Peter

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