Examination on Physics

Class: SSS 1

Term: First Term

Time: 1 Hour

Total Marks: 70

SECTION A: OBJECTIVES (40 Marks)

Instruction: Answer all questions.

________ is the study of matter in relation to energy. (a) Biology (b) Chemistry (c) Physics (d) Geography
The fundamental unit of thermodynamic temperature is the ________. (a) Celsius (b) Kelvin (c) Ampere (d) Candela
Which of the following is a derived quantity? (a) Mass (b) Length (c) Velocity (d) Time
A career prospect for a student studying physics is ________. (a) Accounting (b) Linguistics (c) Telecommunications (d) Botany
The ________ is the instrument used to measure the diameter of a very thin wire. (a) Meter rule (b) Vernier caliper (c) Micrometer screw gauge (d) Tape measure
An example of a way to measure time in modern physics is the ________. (a) Sundial (b) Sand clock (c) Stopwatch (d) Heartbeat
Which of these is not a fundamental quantity? (a) Luminous intensity (b) Electric current (c) Weight (d) Amount of substance
The movement of a person walking along a straight path is ________. (a) Rotational (b) Oscillatory (c) Random (d) Rectilinear
All of these are types of motion except ________. (a) Relative (b) Circular (c) Stationary (d) Vibrational
Which is NOT a contact force? (a) Friction (b) Magnetic force (c) Tension (d) Upthrust
The main reason for applying grease to the moving parts of a machine is ________. (a) To increase heat (b) To reduce friction (c) To increase weight (d) To stop motion
Friction that exists between two surfaces at rest is called ________. (a) Dynamic friction (b) Static friction (c) Rolling friction (d) Kinetic friction
Which of the following is a vector quantity? (a) Speed (b) Distance (c) Displacement (d) Work
The ________ is defined as the rate of change of distance with time. (a) Velocity (b) Speed (c) Acceleration (d) Displacement
Which of these is not a method of reducing friction? (a) Lubrication (b) Use of ball bearings (c) Streamlining (d) Roughening the surface
The correct step in calculating the gradient of a distance-time graph is to ________. (a) Find the area (b) Divide change in distance by change in time (c) Multiply distance and time (d) Square the time
A car moving with constant speed in a specific direction is said to have ________. (a) Uniform velocity (b) Variable acceleration (c) Deceleration (d) Average speed
________ is the rate of change of velocity with time. (a) Power (b) Force (c) Acceleration (d) Momentum
Which is NOT one of the three equations of uniformly accelerated motion? (a) $v = u + at$ (b) $s = ut + \frac{1}{2}at^2$ (c) $v^2 = u^2 + 2as$ (d) $P = IV$
The ________ of two or more vectors is a single vector that has the same effect. (a) Component (b) Resultant (c) Equilibrium (d) Scalar
An example of a scalar quantity is ________. (a) Force (b) Weight (c) Energy (d) Acceleration
Which of the following represents a vector? (a) 5 kg (b) 10 m/s East (c) 20 Joules (d) 15 Watts
The process of splitting a single vector into two components at right angles is ________. (a) Vector addition (b) Vector resolution (c) Vector multiplication (d) Vector subtraction
________ is the product of force and the distance moved in the direction of the force. (a) Power (b) Energy (c) Work (d) Torque
The unit of measurement for Power is the ________. (a) Joule (b) Newton (c) Watt (d) Pascal
Which of the following is a non-renewable world energy resource? (a) Solar (b) Wind (c) Coal (d) Water
The energy possessed by a body due to its motion is ________. (a) Potential energy (b) Kinetic energy (c) Chemical energy (d) Solar energy
All of these are forms of mechanical energy except ________. (a) Potential energy (b) Kinetic energy (c) Elastic energy (d) Nuclear energy
The ________ states that energy cannot be created or destroyed. (a) Law of Inertia (b) Principle of Conservation of Energy (c) Archimedes Principle (d) Hooke’s Law
Work done in a force field like gravity depends on ________. (a) Time (b) Height (c) Velocity (d) Color
The ________ is the quantity of matter in a body. (a) Weight (b) Mass (c) Volume (d) Density
Which of these is not an application of physics in medicine? (a) X-rays (b) Ultrasound (c) Radiotherapy (d) Crop rotation
A simple pendulum undergoes ________ motion. (a) Rotational (b) Oscillatory (c) Random (d) Translational
The ________ is the ratio of limiting frictional force to normal reaction. (a) Coefficient of friction (b) Acceleration (c) Mechanical advantage (d) Efficiency
Which is NOT a career path for a Physics student? (a) Aeronautics (b) Civil Engineering (c) History (d) Geophysics
The ________ of a velocity-time graph represents the distance covered. (a) Slope (b) Intercept (c) Area under the curve (d) Gradient
Which of the following is used to measure the internal diameter of a beaker? (a) Meter rule (b) Vernier Caliper (c) Tape measure (d) Thread
An object moving in a zig-zag manner without a definite pattern shows ________. (a) Rectilinear motion (b) Random motion (c) Circular motion (d) Uniform motion
The main reason for studying scalars and vectors is to ________. (a) Name objects (b) Understand magnitude and direction (c) Measure mass only (d) Count numbers
Power is defined as the rate of ________. (a) Doing work (b) Moving distance (c) Changing mass (d) Increasing friction

SECTION B: THEORY (30 Marks)

Instruction: Answer any THREE questions.

Question 1

(a) Define Physics and list two applications of Physics in communication. (2 marks)

(b) Differentiate between fundamental and derived quantities, giving two examples of each. (3 marks)

(d) State the S.I. units for: (i) Luminous Intensity (ii) Amount of substance. (2 marks)

Question 2

(a) Briefly explain the term “Relative Motion”. (2 marks)

(b) List four types of motion and give one example of each. (3 marks)

(d) Calculate the work done when a force of 50N moves a block through a distance of 5m. (2 marks)

Question 3

(a) Distinguish between speed and velocity. (2 marks)

(b) Derive the first equation of motion $v = u + at$ . (3 marks)

(d) What is meant by “Uniform Acceleration”? (2 marks)

Question 4

(a) Define a Scalar quantity and a Vector quantity. (2 marks)

(b) Explain the two methods used in the addition of vectors. (3 marks)

(d) A body of mass 2kg is placed at a height of 10m. Calculate its Potential Energy ( $g = 10m/s^2$ ). (2 marks)

Question 5

(a) Define Power and state its S.I. unit. (2 marks)

(b) List three world energy resources and categorize them as renewable or non-renewable. (3 marks)

(d) State two methods of reducing friction in a car engine. (2 marks)

Objective Marking Scheme

Question 1 – ✅ (c) Physics

Question 2 – ✅ (b) Kelvin

Question 3 – ✅ (c) Velocity

Question 4 – ✅ (c) Telecommunications

Question 5 – ✅ (c) Micrometer screw gauge

Question 6 – ✅ (c) Stopwatch

Question 7 – ✅ (c) Weight

Question 8 – ✅ (d) Rectilinear

Question 9 – ✅ (c) Stationary

Question 10 – ✅ (b) Magnetic force

Question 11 – ✅ (b) To reduce friction

Question 12 – ✅ (b) Static friction

Question 13 – ✅ (c) Displacement

Question 14 – ✅ (b) Speed

Question 15 – ✅ (d) Roughening the surface

Question 16 – ✅ (b) Divide change in distance by change in time

Question 17 – ✅ (a) Uniform velocity

Question 18 – ✅ (c) Acceleration

Question 19 – ✅ (d) $P = IV$

Question 20 – ✅ (b) Resultant

Question 21 – ✅ (c) Energy

Question 22 – ✅ (b) 10 m/s East

Question 23 – ✅ (b) Vector resolution

Question 24 – ✅ (c) Work

Question 25 – ✅ (c) Watt

Question 26 – ✅ (c) Coal

Question 27 – ✅ (b) Kinetic energy

Question 28 – ✅ (d) Nuclear energy

Question 29 – ✅ (b) Principle of Conservation of Energy

Question 30 – ✅ (b) Height

Question 31 – ✅ (b) Mass

Question 32 – ✅ (d) Crop rotation

Question 33 – ✅ (b) Oscillatory

Question 34 – ✅ (a) Coefficient of friction

Question 35 – ✅ (c) History

Question 36 – ✅ (c) Area under the curve

Question 37 – ✅ (b) Vernier Caliper

Question 38 – ✅ (b) Random motion

Question 39 – ✅ (b) Understand magnitude and direction

Question 40 – ✅ (a) Doing work