PHYSICS PAPER 3 (CONFIDENTIAL) - 2019 KCSE STAREHE MOCK EXAMS (QUESTIONS AND ANSWERS)

CONFIDENTIAL
QUESTION 1

• A Metre rule
• A wire of length at least 100 cm
• A retort stand, boss and clamp.
• A stop watch or stop clock
• A micrometer screw gauge
• An overflow can
• A beaker at least 50 ml or more.
• A 50 ml measuring cylinder
• A piece of thread about 30 cm
• Water in a 250 ml beaker
• Two pieces of wood.
• Mass labelled m, 45 grams.

QUESTION 2

• A metre rule
• A screen fitted with cross-wires labelled O
• A mounted white screen labelled S
• A lump of plasticine
• A candle
• Two lenses L1; and L2 in lens holders, focal length for both lenses = 20 cm,
• A plane mirror 6 cm × 6 cm - pieces of cello tape.