Summary

• Description:

  The MS Word document comprises AIC CHAMPION JOINT Physics Paper 3 2026 Mock Exam with Answers (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 candidates' hands-on experimental proficiency in geometric optics, focal length determination, cylindrical lens magnification, cooling curves, and electrical DC resistor circuits.

  • Month Administered: July 2026
  • Duration: 2 ½ Hours
  • Number of Questions: 2 (Questions 1–2)
  • Structure: Question 1 (Optics & Refraction - Part A and Part B) and Question 2 (Thermal Cooling & Current Electricity - Part A and Part B).

  It covers the following topics:

  • Question 1 (Part A): Optics using a thin convex lens
    • Image displacement method: conjugate foci, sharp magnified and diminished images of a candle flame on a screen
    • Lens displacement measurement and calculation of focal length
  • Question 1 (Part B): Liquid cylindrical lens optics
    • Measuring internal radius of a cylindrical glass beaker using liquid volume
    • Image formation through a water-filled beaker acting as a cylindrical lens
    • Recording object distance (u) and image distance (v), plotting v against u, determining slope, and computing optical constants
  • Question 2 (Part A): Thermal physics and rate of cooling
    • Room temperature measurement and hot water cooling curve observation over fixed time intervals
    • Calculating the instantaneous rate of cooling at specified time intervals
    • Computing heat lost using specific heat capacity of water
  • Question 2 (Part B): Current electricity and resistance
    • Circuit wiring with dry cells, potentiometer, ammeter, and voltmeter
    • Measuring voltage and current to determine resistance of resistor R1 using Ohm’s law
    • Connecting resistors in series, determining total combined resistance, individual resistor R2 value, and average resistance
• File Size:

  1.73 MB
• Length:

  7 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Physics
• Posted By:

  Caleb_Peter

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