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2024 WAEC: Physics 1 & 2 – (Essay), (Objective) – How to Pass the Exam Today

The West African Examinations Council (WAEC) exams are a pivotal point in the academic journey of students across West Africa. Excelling in these exams can open doors to higher education and career opportunities.

In this article, we will focus on the Physics 2 (Essay) and Physics 1 (Objective) exams, providing you with strategies and answers to the most asked questions to help you succeed.

Understanding the Exam Format

Physics 2 (Essay)

• Duration: 1 hour, 30 minutes
• Structure: Several essay questions requiring detailed explanations and calculations.

Physics 1 (Objective)

• Duration: 1 hour, 15 minutes
• Structure: Multiple-choice questions covering a wide range of topics.

Frequently Asked Questions

How can i effectively prepare for the physics essay and objective exams.

• Study the Syllabus : Familiarize yourself with the topics outlined in the WAEC syllabus.
• Practice Past Papers : Work through previous years’ exam papers to understand the question patterns.
• Understand Key Concepts : Ensure you have a strong grasp of fundamental physics principles.
• Time Management : Practice answering questions within the set time limits.

What Are the Key Topics to Focus On?

• Mechanics : Motion, forces, work, energy, and power.
• Thermodynamics : Heat, temperature, and laws of thermodynamics.
• Waves and Optics : Properties of waves, sound, light, lenses, and mirrors.
• Electricity and Magnetism : Electric fields, circuits, magnetism, and electromagnetic induction.

How Can I Master the Practical Aspects of the Exam?

• Watch Tutorial Videos : Utilize online resources for step-by-step practical guides.
• Understand the Experiments : Know the procedures and expected outcomes for standard physics experiments.
• Practice Drawing : Learn to accurately draw diagrams for experiments and apparatus setups.

What Are Some Last-Minute Tips for Exam Day?

• Review Key Formulas : Have a quick look at essential physics equations.
• Stay Calm : Keep a clear mind and manage exam stress effectively.
• Check Your Work : If time permits, review your answers for any mistakes.

Passing the WAEC Physics exams requires dedication, understanding, and strategic preparation. By focusing on the areas of concentration, practicing consistently, and utilizing available resources, you can enhance your chances of success. Remember, the key to excelling is not just hard work, but also smart work.

Good luck to all the candidates!

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Home » WAEC Physics Answers 2024 (Essay-Objectives) is Out

WAEC Physics 2024 Answers for Essay-Obj Questions Released.

The Waec physics answers for 2024 questions can now be seen here. The West African Examination Council (WAEC) Physics paper will be taken on Tuesday, 21st May 2024.

WAEC Physics questions and answers for essay objectives are now available. The Waec Physics 2 (Essay) paper will start by 2:00 pm and will last for 1hr 30 mins while the Waec Physics 1 (Objective) exam will commence at 3:30 pm and will last for 1hr 15 mins.

Following recent reviews, it has been found out that the weaknesses of candidates in WAEC Physics questions included a lack of understanding of the fundamentals of the course, inability to take precise measurements to the required accuracy, inability to plot graphs correctly and disregard of instruction, which makes them loose precious marks.

In this post, we will be sampling wa ec physics questions for candidates that will participate in the SSCE examination from past questions.

WAEC Physics Answers 2024 Questions.

PAPER 2 [Essay] Read Instructions. Write your answers in the answer booklet provided.

1. Explain why mercury does not wet glass while water does.

ANS: Mercury does not wet glass because (force of) cohesion/attraction of mercury molecules is greater than (force of) adhesion/attraction between glass and mercury molecules.

Water wets glass because (force of) adhesion/attraction between glass and water molecules is greater than (force of) cohesion/attraction of water molecules

2. (a) State Faraday’s second law of electrolysis. (b) An electric charge of 9.6 x 104 C liberates 1 mole of substance containing 6.0 x 1023 atoms.  Determine the value of the electronic charge. ANS: (a) If the same quantity of electricity is passed through different voltameters/electrolytes connected in series the masses of the substances liberated/deposited during electrolysis is (directly) proportional to their chemical equivalents. (b) Let e represent the electronic charge. e  =   Faraday’s constant Avogadro’s number =          9.6 x 104 6. 0. x 1023 =  1.60 x 10-19C

3. State: the difference between plane polarized light and ordinary light; two uses of polaroids

ANS: In plane-polarized light, the vibrations of the particles are confined to a single plane perpendicular to the direction of propagation of light while in ordinary light, the vibrations of the particles are in all planes. Uses of Polaroid – sunglasses (to reduce the intensity of sunlight) – to eliminate reflected light/glare – saccharimeter/measurement of the concentration of sugar solution. –  stress analysis/photoelasticity.

4. (a) State Faraday’s second law of electrolysis. (b) An electric charge of 9.6 x 104 C liberates 1 mole of substance containing 6.0 x 1023 atoms. Determine the value of the electronic charge. ANS:  (a) The mass of an element deposited /liberated during electrolysis is (directly) proportional to the chemical equivalent of the element. (b) Let e represent the electronic charge. e  =   Faraday’s constant Avogadro’s number =  9.6 x104    6. 0. x 1023 =  1.60 x 10-19C

5. Explain the following terms: (a) tensile stress; (b) Young’s modulus.

6. (a) Define diffusion. (b) State two applications of electrical conduction through gases. ANS:  (a) Diffusion is the process by which substances mix with one another due to the random motion of their molecules. (b) Applications of electrical conduction through gases include: – In the advertising industry/ Neon signs – In lighting/ fluorescent tubes – Identification of gases – Cathode ray oscilloscope/ T.V. tubes.

7. (a) List two properties of cathode rays. (b) Explain how the intensity and energy of cathode rays may be increased. ANS: (a) Properties of cathode rays: – They are negatively charged. – travel in a straight line in a field-free space. – are deflected by an electric/magnetic field. – possess (kinetic) energy. – possess momentum. (b) The intensity of cathode rays may be increased by raising the temperature of the cathode /increasing the current through the heater. They may be increased by raising the potential difference between the anode and the cathode/anode potential.

8. Give three observations in support of de Broglie’s assumption that moving particles behave like waves.

9. (a) Differentiate between plane polarization and interference as applied to waves. (b) List two uses of polaroids. ANS: (b) They are used in: – production of 3-dimensional films – determination of the concentration of sugar solution – polaroid cameras – sunglasses.

10. (a) State two factors that affect the mass of elements deposited during electrolysis. (b) List two non-electrolytes. ANS: (a) time, current /quantity of charge, nature/ e.c.e of the element. (b) water, kerosene, petrol, benzene, ethanol.

12. (a) i. State two advantages of alcohol over mercury as a thermometric liquid. ii. When the bulb of a thermometer is placed in a beaker of hot water, the level of mercury first falls and then rises gradually. Explain this observation. (b) List two factors, other than temperature, that affect the rate of evaporation of a liquid. (c) A block of lead of mass 100kg in a crucible and at a temperature of 40oC was placed in an electric furnace rated 10kW. If the melting point of lead is 320oC, calculate the: (i) quantity of heat required to heat the lead to its melting point; (ii) additional heat energy required to melt the lead; (iii) time taken to supply this additional energy. (Specific heat capacity of lead = 120JKg-1 K-1 (Specific latent heat of fusion of lead = 2.5 x 104 JK-1) (d) State two precautions necessary in an experiment to determine the specific latent heat of vaporization of water.

ANS: (a) i. Advantages of alcohol over mercury as a thermometric liquid –  lower freezing point –  cheaper – easily expansively. ii. the glass of the bulb of the thermometer first expands; hence the mercury level fails. The expansion of the mercury increases more than that of the glass and the liquid rises. (b) Factors other than temperature affecting the rate of evaporation of a liquid – wind – humidity/ dryness of the air –  nature of liquid/ viscosity /density – the area of liquid exposed –  pressure.

13. (a) State two factors that affect the angle of deviation of a ray of light through a triangular glass prism. (b) Seven virtual images of an object are formed when two plane mirrors are inclined at an angle 0 to each other. Calculate the value of 0. (c) By means of a ripple tank, a student was able to generate a series of transverse waves by varying the frequency ofthe dipper, and all the generated waves covered a distance of 0.80 m in 0.2 s. (i) Determine the speed, v, of the waves (ii) Copy and complete the table given above in your answer booklet. (iii) Plot a graph with f on the vertical axis and h -1 on the horizontal axis. (iv) What does the slope of the graph represent?

14. The Fig. 5.1 below shows a ray of light entering and passing along an optical fibre.

(a) Calculate the refractive index of the glass in the optical fibre. (b) Explain why the ray of light is totally internally reflected at A. (c) Both optical fibre and copper wire are used to transmit data. Optical fibre is cheaper and can carry more data per second than copper wire. State one other advantage of using an optical fibre rather than copper wire to transmit data.

15. (a) State two differences between a sound wave and a radio wave (b) Explain why a vibrating tuning fork sounds louder when its stem is pressed against a tabletop than when held in air. (c) State two conditions necessary for the: i. production of stationary wave in a medium; ii. formation of interference wave patterns; iii. occurrence of total internal reflection of a wave. (d) i. A ray of light is incident on one face of an equilateral glass prism. Draw a ray diagram to show the path of the ray through the prism. ii. Calculate the refractive index of the glass if the angle of minimum deviation is 41o.

WAEC Physics Objective Questions 2024.

Paper 1 [Objective] Answer ALL questions in this section. Shade your answers on the answer booklet provided.

1. An electron moves with a speed of 2.00 x 107 ms-1 in an orbit in a uniform magnetic field of 1.20 x 10-3T. Calculate the radius of the orbit. [Mass of an electron = 9.11 x 10-31kg; charge on an electron = 1.61 x 10-19C]

2. A tennis ball projected at an angle attains a range R = 78 m. If the velocity imparted to the ball by the racket is 30ms-1, calculate. [g=10ms-2]

3. A metallic bar 50 cm long has a uniform cross-sectional area of 4.0 cm2.  If a tensile force of 35kN produces an extension of 0.25 mm, calculate the value of Young’s modulus.

4. A stone projected horizontally from the top of a tower with a speed of 4 ms-1 lands on the level ground at a horizontal distance of 25 m from the foot of the tower. Calculate the height of the tower. [g = 10 ms-2]

5. A spiral spring with a metal extends by 10.5cm in air. When the metal is fully in water, the spring extends by 6.8 cm. Calculate the relative density of the metal (Assume Hooke s law Is obeyed)

6. A ray of light is incident on an air-glass boundary at an angle t? If the angle between the partially reflected ray and the refracted ray is 90°, calculate θ given that the refractive index of glass is 1.50.

7. A ball is projected horizontally from a height with a velocity of 40 ms-1. Calculate the drop in height after traveling a horizontal distance of 30m. [Neglect air resistance; g = 10 ms-1]

NOTE: There is nothing like the Waec physics expo online. Do not be deceived by fraudsters posing with fake Waec physics answers on the internet. The resources above on WAEC Physics Answers have been made available to assist candidates understand the required standards expected in Physics final Examination.

Keep following, more questions and answers will be added soon.

Physics Essay Examples and Topics

Physics lab report: hooke’s law, newton’s second law of motion, electric circuits: verifying ohm’s law.

• Words: 2133

The Inclined Plane: Physics

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A Mesh and Nodal Analysis Lab Report

The latent heat of vaporization experiment.

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Classical Physics: Aristotle, Galileo Galilei and Isaac Newton

• Words: 2173

Energy Conservation: The Lab Experiment

• Words: 1116

The Operational Amplifier: A Physical Experiment

The experiment with spring balance.

• Words: 1245

The Focal Length Determination for Two Convex Lenses Lab

Experiment: shear force in a beam, torque supported by real-life applications.

• Words: 1151

The Phone Case Drop: Force Analysis

Laws of electromagnetic induction.

• Words: 1095

Lab Report: KCL and KVL Applicability Studies on Three Circuits

Collisions in one dimension: a physical experiment.

• Words: 1362

A Resonance Tube Laboratory Experiment

Electrical circuit theory: rectification process.

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Clay Spheres: The Mass and the Diameter Relationship

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Conservation Of Energy

Physics lab report: centripetal force, the solid-liquid equilibrium in a binary system experiment.

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How maglev trains work

The physics of gun recoil. scientific background, electricity and magnetism: the interrelationship, boyle’s law and its importance in flight operations.

• Words: 1246

Reflection and Refraction of Light: Examples

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Sliding Friction: Static and Kinetic Friction

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Optics: The Experiment of Snell’s Law

The resistance of a conductor is directly proportional to its length, steel and young’s modulus experiment, pros and cons of nuclear power, isaac newton and his three laws of motion.

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Physics: Permeability of Free Space

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Atoms: History, Structure and Application

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Electrostatic Coalescence and Crude Oil Dehydration

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Balancing Masses: A Mechanical Experiment

Three non-parallel forces in equilibrium.

• Words: 1314

Picket Fence Free Fall Analysis

Single channel and multichannel analyzers.

• Words: 1468

Moments Principles for Parallel and Non-Parallel Forces

Lab report: gas properties studying.

• Words: 1419

Torsion of Circular Sections: A Mechanical Experiment

Torque and equilibrium experiment, the evolution of electricity.

• Words: 2790

Reactance, Frequency Response, and Resonant Circuits

Closed loop motor speed control techniques.

• Words: 1477

Design of a Power Winch

• Words: 5511

Specific Heat: Impact on Everyday Life

Alternate processing methods for xrays(radiography), forces in equilibrium discussion, fiber optics: definition, types, benefits, the concept of string theory, the path of light.

• Words: 1322

Experiment: Frame Deflections and Reactions

• Words: 1405

The Centripetal Force Experiment

Water cycle process, rainbow and its various aspects.

• Words: 1339

A Metals Density Virtual Lab Experiment

The big bang theory: experimental evidence, how the universe was created according to physics.

• Words: 1782

Magnetic Fields: Charge-to-Mass Ratio of an Electron

• Words: 1272

Thermoelectric Cooling Systems Efficiency Experiment

• Words: 1365

Plastic Bending of Portals Experiment

• Words: 2166

Albert Einstein’s Contributions to Science

Single and combined pulley mechanisms, ohm’s law and circuits, physics: analysis of pendulum lab report, taking it to the limit: physics in formula one car design.

• Words: 1451

Non-Conventional Energy Resources

Different sources of energy, ballistics: types of bullets and damage.

• Words: 1100

Determining Heat Capacity of a Metal Cylinder

The elasticity experiment in physics, semiconductor opening switches.

• Words: 2722

Electromagnetic Induction: Changes in Magnetic Flux

• Words: 2780

The Use of Physics in my Daily Activities

• Words: 1408

Effects of Mass on the Braking Distance of a Bicycle

• Words: 1293

Observing Orientation Behavior in Planarian Dugesia SP

• Words: 1688

Energy and Momentum in the Daily Life

Energy: types and conversion process, simple harmonic motion lab test, the concept of heat and temperature.

• Words: 1156

Laws of Physics and Bowling

Richard feynman: life and work, time-space convergence consequences, concept of speed in physics, tensile testing of metallic materials.

• Words: 1912

Contradictions to the Conservation Law of Energy

The wonders of the universe.

• Words: 3811

Determining Specific Heat Capacity of a Metallic Substance

The origin of the universe: the big bang theory and the creation theory, the relationship between the kinetic energy of motion and the force, electrolysis of metals to refine.

• Words: 1105

Experiment: Transients in Power Equipment Circuits

An introduction to energy and its development.

• Words: 1303

Electricity Generation from Decomposing Food

• Words: 1946

Intrinsic Defects Definition

The sky’s blue color and its physical explanation, blue sky and white clouds, the electromagnetic spectrum.

• Words: 1352

Pendulum Experiment: Pendulum Motion and Factors Affecting Period

Waves on a string: a physics laboratory, light emitting diodes and laser diodes.

• Words: 1640

Physics: The Term Terminal Velocity

Blue sky and white clouds in physics, air-conditioning and heating systems.

• Words: 1628

Can Hot Water Freeze Faster Than Cold Water?

The formation of rainbows.

• Words: 1580

The Cart Final Speed: Dependence on the Momentum

Torque on thin rods: an experimental study, lab report: researching of elasticity, work and energy experimental lab, centripetal force: experimental analysis, aerodynamic challenges in high-speed/high-altitude flight, nasa exercise: lost on the moon, aluminum strip vs. honeycomb beam: strain analysis, simulation of ac-dc regulated power supply, relationship between magnetism and electromagnetism.

How to Produce a Brilliant Physics Essay

Table of Contents

How to Write a Brilliant Physics E ssay

The primary objective or writing in physics is to succinctly convey information regarding the outcomes of experiments and calculations. Secondary to this objective is the goal of offering an improved understanding of various physical models, theories, and calculations. As is the case in other disciplines, all forms of academic writing in physics must be conducted using the appropriate structure, irrespective of whether they are research papers or lab reports. A typical manuscript of a physics research paper includes a list of authors, and abstract, an introductory section, the main body of the paper, and a conclusion section. Other inclusions could be appendices, acknowledgements, and references. While writing reports and essays in physics is a critical component of academic performance, most students have trouble formulating and structuring papers. This guide is intended to help students in writing good papers in physics.

Conventions of Writing a Physics Research Paper

An important consideration when writing a good physics paper is to be make clear and logical connections. In physics, as is the case with other sciences, a good paper must make clear and logical associations between the work being reported and existing knowledge in the same area. In other words, the writer should explain how the work he or she is presenting refutes or supports previous work in the area and how the current work extends the knowledge in the field. Therefore, a physics term paper is an argument that needs to be logical, with a logical flow of interlinked ideas. Some of the sections to consider when structuring a physics paper include:

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• Introduction
• Review of literature
• Methodology or experiment
• Data analysis and discussion

Another crucial element of good physics papers is concise writing. In the event that a paper is seen as too long or difficult to read, there is a risk of it being ignored by the target audience. Furthermore, if you are considering publishing your paper in a journal article, more pages mean spending significantly more. As such, writing articles in the physical sciences must be as clear and concise as possible. Try to break sentences that appear long in shorter sentences. Physical papers are similar to all other forms of academic writing in terms of punctuation, grammar, spelling and acronyms. However it is important to note that the Physical dissertation papers use a lot of acronyms that should be defined before they can be used in the document.

Writing in the physical sciences also requires care in citing other sources. When writing physics papers, a thorough reference must be made to reliable external data sources or theory related to the writing of the paper. Any reference made within the text must be made immediately after the referenced information has been provided. At the end of the paper, all sources cited in the body of the paper must be listed as references. The choice of style of refereeing should reflect the specific requirements of the instructor.

A Few Last Notes on Writing a Physics Thesis

You should consider creating an outline at some point in the process of writing your paper to produce a paper with a logical flow of ideas. It is recommended that you build an outline after a literature search or after you have obtained theoretical results. You can create your outline by putting the key ideas in the relevant sections of the Physics thesis, which are the introduction, the body and the conclusion. Ideas are therefore the subject of the sentences of the various paragraphs in the sections. Once you have expanded your outline by providing content to the sections, you will produce a first draft, and there are likely to be multiple drafts. In the light of the scrutiny of the scientific papers, adjustments are often required, not only as a way of correcting grammatical errors and typos, but also in order to adjust the logical flow and the scientific content. You’ll need to perform multiple proofreading before the paper reaches its final form.

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Home — Essay Samples — Science — Physics

Essays on Physics

Welcome to our collection of Physics essay samples! If you’re looking for inspiration or guidance on how to write an engaging and informative essay about physics, you’ve come to the right place. This page is dedicated to helping you navigate through our examples and providing tips on crafting your own unique piece.

Why Choose a Physics Essay Sample?

Physics is a fascinating subject that explores the fundamental principles governing the universe. From classical mechanics to quantum theory, there's so much ground to cover! Our physics essay samples are designed to give you a solid starting point. Whether you're tackling topics like Newton's laws, thermodynamics, or relativity, these essays can help spark ideas and clarify concepts.

How to Select the Right Essay Sample

When choosing an essay sample from our collection, think about what interests you most in physics. Are you drawn more towards theoretical aspects or experimental research? Maybe you're interested in how physics relates to real-world applications. Take some time to browse through our categories and pick an essay that resonates with your curiosity and academic needs.

If you're unsure where to start, consider these questions: What specific topic do I want my essay to focus on? Do I prefer essays that are argumentative or expository? Finding answers will guide your selection process and ensure that your chosen sample aligns with your assignment requirements.

Writing Your Own Physics Essay

Once you've selected a sample that inspires you, it’s time for the fun part – writing your own essay! Start by analyzing the structure of the example you've chosen. Look at how it's organized; does it have a clear introduction, body paragraphs presenting arguments or evidence, and a strong conclusion?

Here are some steps you might find helpful:

• Create an Outline: Before diving into writing, outline your main points based on what you've learned from the sample. This will give your essay direction.
• Do Research: Make sure you're well-informed about the topic you've chosen. Use reliable sources like textbooks or academic journals as references.
• Add Your Voice: While it's great to use our samples for guidance, make sure your personality shines through in your writing! Share personal insights where applicable.
• Edit and Revise: After finishing your draft, take time to review it. Editing is key in making sure everything flows nicely together!

The Importance of Understanding Physics Concepts

Diving into physics concepts not only helps with writing but also enhances critical thinking skills. As you explore different ideas in physics through these essays—like forces acting upon objects or energy conservation—you’ll gain deeper insights into both scientific principles and their broader implications.

Your Unique Perspective Matters!

Your perspective adds value! Each writer brings something new when discussing complex topics like those found in physics. Don’t hesitate; share examples from everyday life that relate back to theory when writing – this connection makes learning more relatable for everyone!

A Final Word

This journey into understanding physics through essays can be truly rewarding. By using our resources wisely—selecting relevant samples as guides while infusing them with personal flair—you'll craft essays worth reading! We hope this guide helps simplify things as you embark on this intellectual adventure!

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WAEC Physics Questions and Answers 2022/2023 |OBJ & Theory Expo

• February 8, 2022

The combination of our free WAEC Physics questions 2021 and the WAEC Physics answers 2021 samples for 2021 theory (essay) & OBJ (objectives) below, will help WAEC candidates to score A or B in this exam.

All the WAEC 2021 Physics Questions and Answers samples below have been completely solved for the 2021 candidates.

Each question, including the OBJ questions and the theory questions on this page has been solved and each answer is written beside the question.

WAEC Physics Expo Runs for Theory and OBJ 2021

This is 2021 free WAEC Physics Expo answers 2021 samples for 2021 theory (essay) paper 2 & OBJ (objectives) paper 1 for 2021 WAEC candidates.

With the idea you will obtain from this, you will be able to even solve every other question (including the WAEC past questions and answers on physics) by yourself.

The theory section will give you the “showing working” of each of the WAEC Physics essay and theory sample questions and answers for 2021 (i.e paper 2). Study the steps and master them in case you see similar questions during the exam.

You can also try solving the questions by yourself (following the same steps we used) and later compare the answer you get with the ones we have provided on this page. Study the entire WAEC physics questions 2021 samples on this page and check their correct answer.

WAEC 2021 Physics OBJ Questions and Answers Samples.

Use the following WAEC 202 1 Physics Objective Questions and Answers samples for the OBJ paper 1 for reference.

Study the entire sample WAEC physics questions 2021 below and check their correct answer. Proceed to the theory section at the bottom to see how each question is solved.

Register WAEC here

1. One Joule is Equal to?

 Correct Answer is C) 10 7 ergs

2. Which of these principles does Optical fiber works on?

• interference
• total internal reflection

The correct answer is C) total internal reflection

3. Why is the base of an electric iron usually brightly polished?

• To Make it smooth and frictionless
• Make it rust-proof
• Reduce heat loss by radiation
• Make it more durable

 Correct Answer is: C) to reduce heat loss by radiation

5. A riffle of mass 15kg fires a bullet of mass 60g with a velocity of 200ms -1. Calculate the recoil velocity of the riffle.

• – 0.8ms -1

The correct answer is A. -0.8ms -1

5. Which of this is the correct formula for Kinetic energy?

The correct answer is D. ½ mu 2

6. If the efficiency of a machine is 60%, find in joules, the work done by the student using this machine to raise a load of 150kg through a vertical distance of 2.5m (g = 10ms -1 )

• 2500 joules

The correct answer is D. 6250 Joules

7. Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30ms -1

The correct answer is B. 45m

8. A mango fruit from the top of its tree which is 5m long drops to the ground. How long does it take the mango to reach the ground?

The correct answer is D. 1.0s

2021 WAEC Past Questions and Answers for Physics.

Additionally, the following WAEC past questions and answers on physics objective will help you to get more ideas on how to solve physics WAEC questions.

Also, do well to scroll to the bottom to see how each of these questions is solved to arrive at the answer.

1. The equation P x V y T z = constant is Gay-Lussac’s law if____?

• x = 0, y = 0 and z = 1
• x = 1, y = 0 and z = -1
• x = 1, y = 1 and z = 1
• x = 0, y= 0 and z = 0
• x = -1, y = 1 and z = 0

The correct answer is B. x = 1, y = 0 and z = -1

2. Calculate the effort put into a machine whose efficiency is 75% and lifts a load of 1000N, if its velocity ratio is 4.

The correct answer is E. 333.33N

Theory question: A rocket is burning fuel at the rate of 200gs -1 and ejecting all the gas in one direction at the rate of 400ms -1 . What is the maximum weight the rocket can have if it is going to move vertically upwards?

Mass of gas per second = 200 / 1000 kgs -1 .

Velocity of expulsion = 400ms -1 .

Momentum change per second = 200 / 1000 x 400kgms -2 .

From Newton’s second law, we have F =W = 200 / 1000 x 400N

Physics Essay and theory sample Questions and Answers for paper 2.

Below are the showing working of the WAEC Physics essay and theory sample questions and answers for 2021 paper 2.

Study the steps and master them in case you see similar questions during the exam.

1 . A stationary ball is hit by an average force of 50N for a time range of 0.03sec. Calculate the impulse experienced by the ball.

Solution: impulse (I) = Ft

=5×0.03

2. Calculate the recoil velocity of a riffle of mass 15kg which fires a bullet of mass 60g with a velocity of 200ms -1.

Mass of the riffle = 15kg, while the mass of the bullet = 60g

The velocity of the bullet = 200ms -1.

The momentum before firing is zero

Momentum after firing = 15 x V + 60/100 X 200 = 15v + 12

Since the momentum is conserved, we will have;

15v + 12 =0

v = – 12 / 15 = -0.8ms -1

Question 3. i . What is the width of the image of an object which subtends an angle of 8 0 at the pinhole of a camera 0.5m long?

ii . How long is the image of the sun on this camera? Take the mean distance of the sun as 1.5 X 10 11 m, and the diameter of the sun as 1.4 X 10 9

Let the width of the image = h (m)

tan8 0 = h/0.5m

h = 0.5 X tan8 0 = 0.5 X 0.1405m = 7cm Ans.

Let the radius of the sun be l (m)

l / 0.5 = 0.7 X 109/1.5 X 10 11 =tan0

l = 0.5 X 0.7 X 109/1.5 X 1011 = 0.233X10-2m

Therefore, the diameter of the image = 0.46cm

The combination of the above WAEC Physics questions 2021 and the WAEC Physics answers 2021 samples for essay, theory, and OBJ (objectives) above, will surely help candidates a lot.

So kindly follow the way each of the questions is solved and master them.

I need the objective and essay

I need questions and answers

This is awesome

Good work,I need waec 2021date it will start April I need the date

I need question and answers 2020

Hi Okika Franklin!! Thanks for showing interest.. Note that WAEC Exam is yet to start..

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