Summary

• Description:

  The PDF document comprises the Physics Paper 3 (Practical) Maseno School Mock Exam as a KCSE Trial Exam, administered in July/August 2024. The marking scheme is in a different document.

  This practical paper consists of two compulsory questions, each worth 20 marks, to be completed within a duration of 2½ hours. The examination is designed to test a candidate's practical skills in setting up apparatus, taking accurate measurements, recording data, connecting circuits, plotting graphs, and analyzing experimental results.

  The paper includes the following two experiments:

  • 1. Mechanics (Oscillations): This experiment investigates the properties of a torsional pendulum. The procedure requires the candidate to first determine the volume of a given mass using the displacement method. The mass is then suspended by a wire and made to oscillate torsionally. Candidates must measure the period of oscillation for different lengths of the suspension wire, record the data, and plot a graph of the period squared (T²) against the length squared (L²) to determine a physical constant.
  • 2. Electricity and Optics: This question is divided into two distinct parts:
    • Part A (Electricity): This part involves determining the resistance of an unknown component (Q). First, the resistance of a known resistor (R) is found using the ammeter-voltmeter method. Then, a metre bridge circuit is set up to find the resistance of the unknown resistor (Q) by balancing it against the known resistor R.
    • Part B (Optics): This part focuses on finding the focal length of a convex lens using the lens displacement method. For a fixed object-screen distance, the two positions of the lens that produce a sharp image are located, and the distance between them is measured to calculate the focal length.
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  PHYSICS

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