Summary

• Description:

  The PDF document comprises Catholic Diocese of Kakamega Evaluation Test Physics Paper 3 2026 Pre-Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Physics Paper 3 examination.

  This hands-on physics practical evaluation assesses laboratory proficiencies in mechanics, principle of moments, electrical circuit resistance, and image formation using biconvex lenses.

  • Month Administered: July/August 2026
  • Duration: 2 Hours 30 Minutes
  • Total Marks: 40
  • Number of Questions: 2 (Questions 1 and 2)
  • Structure: Question 1 (Mechanics and Electricity, 20 marks), Question 2 (Optics, 20 marks)

  It covers the following topics:

  • Question 1 (Part A - Mechanics & Upthrust):
    • Volume determination using displacement in a measuring cylinder
    • Upthrust calculation on immersed plasticine
    • Balancing of a suspended meter rule using principle of moments to determine unknown mass
    • Relative density analysis of submerged plasticine via distance adjustments
  • Question 1 (Part B - Current Electricity):
    • Circuit connections with dry cells, switches, voltmeters, and ammeters
    • Measurement of electromotive force (e.m.f) and closed-circuit terminal voltage
    • Determination of circuit resistance and physical significance of the constant K
  • Question 2 (Optics & Lens Formula):
    • Rough focal length determination using distant objects
    • Optical bench setup with candle, cross-wire object, biconvex lens, and screen
    • Object distance (u) vs. image distance (v) measurements and linear magnification calculation
    • Graphical plotting of linear magnification (m) against image distance (v)
    • Determination of focal length from the graph gradient and verification with experimental values
• File Size:

  2.37 MB
• Length:

  6 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Physics
• Posted By:

  Caleb_Peter

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