Summary

• Description:

  The MS Word document comprises Mmalina Joint Trial Physics Paper 3 2026 Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Physics 232/3 examination.

  This practical examination tests students' experimental competencies in electricity, geometrical optics, and mechanics. It emphasizes accurate measurement, graphical analysis, and parameter extraction to build complete practical confidence for KCSE physics practical tests.

  • Duration: 2 Hours 30 Minutes
  • Total Marks: 40
  • Number of Questions: 2 (Questions 1 and 2)
  • Structure: Two compulsory practical questions carrying 20 marks each: Question 1 covers current electricity, while Question 2 covers refraction through a glass block (Part A) and oscillations of a rolling sphere on a watch glass (Part B).

  It covers the following topics:

  • Question 1: Current Electricity
    • Open circuit voltage and electromotive force (e.m.f.) measurement
    • Potential difference and current variations along a resistance wire
    • Resistance computation and plotting a graph of resistance against inverse of current
    • Determining e.m.f. and internal resistance of dry cells from slope and intercept
  • Question 2: Optics and Mechanics
    • Part A (Refraction of Light): Tracing rays through a rectangular glass block using optical pins, measuring angles of incidence and path lengths, and calculating the refractive index
    • Part B (Oscillations and Curvature): Timing periodic oscillations of a marble on a concave watch glass, measuring marble diameter with Vernier calipers, and calculating the radius of curvature of the watch glass
• File Size:

  228.63 KB
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Physics
• Posted By:

  Caleb_Peter

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