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This is the ZIMSEC O-Level Physics question paper for Paper 1. Use it for exam practice under timed conditions. The paper code is 4023/1. Time allowed: 1 hour.
# ZIMBABWE SCHOOL EXAMINATIONS COUNCIL <br> General Certificate of Education Ordinary Level
**PHYSICS**
PAPER 1 Multiple Choice
**SPECIMEN PAPER**
Additional materials:
Multiple Choice answer sheet
Soft clean eraser
Soft pencil (type B or HB is recommended.)
Electronic calculator
### INSTRUCTIONS TO CANDIDATES
Answer all questions. For each question, there are four possible answers, \(\mathbf{A}, \mathbf{B}, \mathbf{C}\) and \(\mathbf{D}\).
Choose the correct answer. Record your choice in soft pencil on the separate answer sheet.
Read very carefully the instructions on the answer sheet.
### INFORMATION FOR CANDIDATES
There are forty questions in this paper. Each correct answer will score one mark. Any rough working should be done on this question paper.
## Question 1
Which one is the SI unit of temperature?
A \(\quad{ }^{\circ} \mathrm{C}\)
B \(\quad{ }^{\circ} \mathrm{K}\)
C \(\quad \mathrm{K}\)
D C
## Question 2
The diagram shows two forces that are perpendicular to each other.
What is the magnitude of the resultant force?
A \(\quad 2 \mathrm{~N}\)
B \(\quad 10 \mathrm{~N}\)
C \(\quad 14 \mathrm{~N}\)
D \(\quad 48 \mathrm{~N}\)
## Question 3
The diagram shows a velocity-time graph of an athlete competing in a race.
At which point is the acceleration greatest?
## Question 4
Terminal velocity of an object is the velocity
A of a falling object when the acceleration is zero.
B of a falling object when acceleration is increasing.
C when the upward force is greater than the downward force.
D when the downward force is greater than the upward force.
## Question 5
A parachutist demonstrating some skills at the national independence celebrations jumps off a helicopter. The acceleration of the parachutist
A is decreasing uniformly.
B is increasing uniformly.
C remains constant.
D is decreasing non-uniformly.
## Question 6
How do air pressure patterns help to predict weather?
A High pressure always indicate rain.
B Low pressure indicates clear skies.
C Changes in pressure can indicate approaching weather systems.
D Pressure patterns have no relation to weather.
## Question 7
It is better to use a long spanner rather than a short one to tighten a bolt because
A a longer spanner reduces the friction between the bolt and the nut.
B a longer spanner produces more torque with the same force.
C a longer spanner increases the pressure applied directly on the bolt head.
D a longer spanner makes the bolt thread stronger.
## Question 8
A dancer of mass 60 kg jumps and lands on the floor with a velocity of \(5 \mathrm{~m} / \mathrm{s}\).
What is the dancer's momentum just before landing?
A \(\quad 300 \mathrm{kgms}^{-1}\)
B \(\quad 65 \mathrm{kgms}^{-1}\)
C \(\quad 12 \mathrm{kgms}^{-1}\)
D \(\quad 0.08 \mathrm{kgms}^{-1}\)
## Question 9
When an ox-drawn cart accelerates up a hill
A it gains both kinetic energy and potential energy.
B it gains kinetic energy but loses potential energy.
C it gains potential energy but loses kinetic energy.
D both kinetic energy and potential energy decrease.
## Question 10
A bucket of maize seed of mass 20000 g is raised through a vertical height of 10 m .
What is the work done?
A 20 J
B 200 J
C 2000 J
D 20000 J
## Question 11
Machines are lubricated in industry in order to
A increase energy gained.
B increase efficiency.
C increase velocity ratio.
D reduce mechanical advantage.
## Question 12
The mechanical advantage of a single moveable pulley is
A 1 .
B 2 .
C 3 .
D 4 .
## Question 13
Which joining method is most appropriate to join plastic to plastic materials?
A gluing
B nailing
C brazing
D soldering
## Question 14
What shape is most commonly used in trusses for stability?
A square
B circle
C rectangle
D triangle
## Question 15
The diagrams show a bimetallic strip when it is at room temperature and after it has been heated during use.
The change in shape occurs because
A brass expands more than iron.
B iron expands more than brass.
C both expand at the same rate.
D neither brass nor iron expands.
## Question 16
In a vacuum flask both walls are silvered in order to
A reduce heat gain by conduction only.
B reduce heat gain or heat loss by radiation.
C reduce heat gain or heat loss by convection.
D reduce heat gain or heat loss by conduction and convection.
## Question 17
Which graph illustrates Boyle's Law?
B
C
D
## Question 18
Modern car manufacturers prefer engines with multiple cylinders.
Which statement is not true about the use of multiple cylinders?
A They have more power strokes per revolution.
B They increase the car's acceleration.
C They facilitate the function of computers in the car.
D They reduce the vibration of the car.
## Question 19
The efficiency of a car engine can be measured by the
A car's speed.
B sound produced.
C smoke produced.
D fuel economy.
## Question 20
The diagram shows how displacement varies with time for a wave passing through a point.
What is the frequency of the wave?
A \(\quad 0.25 \mathrm{~Hz}\)
B \(\quad 0.50 \mathrm{~Hz}\)
C \(\quad 1.00 …