FORM FOUR PRE โ NATIONAL EXAMINATIONS, 2024
031/1 PHYSICS 1
Time: 3:00 Hours Thursday 15th August, 2024 p.m.
Instructions
This paper consists of sections A, B and C with a total of eleven (11) questions.
Answer all questions in section A and B and only Two questions from section C.
Non-programmable calculators are allowed in the examination room.
Cellular phones and any unauthorized materials are not allowed in the examination room.
Write your Examination Number on every page of your answer booklet(s).
The following constants may be used:
Acceleration due to gravity g, =10/๐ 2
Pie, ๐ = 3.14
Specific heat capacity of water = 4200๐ฝ/๐๐โ
Speed of sound in air = 340๐/๐
Speed of light 3 ร 108๐/๐
Specific heat capacity of paraffin= 2200๐ฝ๐๐โ1๐โ1
Specific heat capacity of brass= 320๐ฝ๐๐โ1๐โ1
SECTION A: (16 Marks)
Answer all questions in this section.
1. For each of the following items (i) - (x) choose the most correct answer from the given alternatives and write its letter besides the item number in the answer booklet(s) provided.
A study that deals with constellation , solar system and cosmos is referred to as
Electromagnetism B Structure and properties of matter
C Light D Astronomy E Geophysics
Why can water striders and pond skaters walk on water without sinking?
Because of the process of osmosis
Because of the process of capillarity
Because of the presence of impurities in water D Because of the force of surface tension E Because of the force of cohesion.
Classify the force experienced when a metal solid or hard object is twisted.
Compression B Stretching
C Restoring D Torsion E Friction
What are the two factors that determine buoyancy?
Volume of fluid displaced and mass of the object
Weight and mass of the object
Density of the fluid and weight of the object
Volume of the fluid displaced and density of the fluid
Mass of the object and density of the object
Identify the statement that describes Pascal's Principle of transmission of pressure in fluids. A. Pressure is equally transmitted in liquid.
Pressure is the ratio of force to area
Pressure depends on the height of the liquid column
Pressure is affected by the force of gravity
Pressure produces upthrust
When the sun shines on the dark-coloured driving wheel of a car, the wheel feels warm. Why?
It is because the sun warms the car by induction.
It is because the sun gives energy to the wheel by convection.
It is because the sun radiates thermal energy to the wheel.
It is because the sun conducts thermal energy to the wheel. E It is because the sun conducts thermal energy to the wheel
A stone is dropped from the top of a building hit the ground 4 ๐ ๐๐๐๐๐๐ ๐๐๐ก๐๐. What was its velocity when hitting the ground? A 400๐/๐
45๐/๐
40๐/๐
4.5๐/๐
0.4๐/๐
Why do people prefer white shawl to wrap around a baby to keep the baby warm?
White shawl is a poor conductor
White shawl indicates cleanliness
White shawl is the poor radiator
White shawl has pockets of air trapped in it
White shawl is a good reflector of heat
Which property of concave mirrors is suitable for a dentist to consider when selecting the best mirrors for repairing dental related activities?
The one that produce diminished images
The one with wider field of view
The one which produce virtual and erect image
The one that produce larger magnification
The one in which objects and images are seen easily.
Which statement distinguishes gravity from gravitational force?
Gravity is the force that pulls objects towards the earth while gravitational force is the attractive force existing between any two objects.
Gravity is the force of attraction between two objects while gravitational force is the force acting to pull objects toward the earth.
Gravity is sometimes called universal gravitation while gravitational force is also called centripetal force.
Gravity is applicable from the largest stars to the smallest atoms while gravitational force does not.
Gravity holds planets to revolve around the sun while gravitational force does not hold planets.