BOKAKE CLUSTER EXAMINATIONS END OF TERM 2, 202 232/1 PHYSICS PAPER 1

BOKAKE CLUSTER EXAMINATIONS
END OF TERM 2, 202
232/1
PHYSICS PAPER 1
SECTION A 25 MARKS
(ANSWER ALL QUESTIONS)
1. A pack of microscope slides has a thickness of 1.18mm. Sketch a diagram of a section of a scale of a
micrometer screw gauge showing this reading
(2mks)
2. When a bottle containing ammonia solution is opened, ammonia gas can be detected from far on a hot
day than on a cold day. Explain.
(1mk)
3. A door curtain is blown outwards instead of inwards when wind blows past the door in a corridor.
Explain this observation.
(2mks)
22
−10 3
4. An oil drop of volume 6.0 × 10 m forms an oil patch of radius 32cm on a water surface or use π = 7
(2mks)
a. Estimate the thickness of the oil molecule (2d.p)
(3mks)
b. Other than oil patch being a perfect circle, state any other assumption made in the oil drop experiment.
(1mk)
5. When a body is falling freely in air, two of the forces acting on the body are viscous drag and
gravitational force. State one other forces that act on the body.
(1mk)
6. The figure below shows a displacement time graph of the motion of a particle