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NECO Physics Questions and Answers 2023/2024 | Essay and Objective

NECO   Physics Questions and Answers 2023. I will be showing you the NECO Physics objective and theory answers as well as repeated questions for free in this post. You will also understand how NECO Physics questions are set and how to answer them.

The National Examinations Council (NECO) is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education in June/July and December/January respectively.

Table of Contents

NECO Physics Objectives And Essay Answers 2023 (Expo)

The 2023 NECO Physics expo will be posted here today 27th July during the NECO Physics examination. Keep checking and reloading this page for the answers.

NECO 2023 Physics Answers Loading.. .

NECO Physics OBJ Answers: The Answers will soon be posted here. Be patient we are solving.

1-10: EADCAEBEBC

11-20: ECDDCDBCCB

21-30: CECBEADCBB

31-40: BADDCDCAAA

41-50: EDACDCACAA

51-60: CEBACCBCAC

Essay Answers:

(i) Solar water heaters: These are devices that use solar collectors to absorb energy from the sun and heat water for domestic or industrial use.

(ii) Solar air heaters: These are devices that use solar collectors to absorb energy from the sun and heat air for space heating or ventilation purposes.

neco 2023 physics obj and essay answers

Total Magnification = Magnification of Objective Lens × Magnification of Eyepiece Lens.

Total Magnification = 10

Magnification of Objective Lens = 2

Let “E” represent the magnification of the eyepiece lens.

neco 2023 physics obj and essay answers

Static friction is a type of friction that exists between two surfaces in contact with each other when they are not moving relative to each other.

Coefficient of static friction (μs) = Force of static friction/ Normal force

Force of static friction = 3N

Normal force = 5N

μs = 3N / 5N = 0.6

neco 2023 physics obj and essay answers

The velocity ratio of a machine is the ratio of the distance moved by the effort to the distance moved by the load. It is a measure of the effectiveness of a machine in transmitting force.

Velocity ratio = distance moved by effort / distance moved by load

A second order lever has the load in the middle, with the effort applied on one side and the fulcrum on the other. The effort arm is longer than the load arm, which means the machine has a mechanical advantage. Examples of second order levers include wheelbarrows and nutcrackers WHILE A third order lever has the effort applied on one end, the load on the other end, and the fulcrum in between. The load arm is longer than the effort arm, which means the machine has a mechanical disadvantage. Examples of third order levers include tweezers and shovels.

Q4&5????

neco 2023 physics obj and essay answers

– Angle of incidence (θ₁) = 60°

– Speed of light in air = 3×10⁸ m/s

– Speed of light in glass = 2×10⁸ m/s

The refractive index (n) of a medium can be calculated using the formula:

n = speed of light in vacuum / speed of light in the medium

Refractive index of air (n₁):

n₁ = speed of light in vacuum / speed of light in air

n₁ = 3×10⁸ m/s / 3×10⁸ m/s

Refractive index of glass (n₂):

n₂ = speed of light in vacuum / speed of light in glass

n₂ = 3×10⁸ m/s / 2×10⁸ m/s

Using Snell’s law to find the angle of refraction (θ₂):

n₁ × sin(θ₁) = n₂ × sin(θ₂)

1 × sin(60°) = 1.5 × sin(θ₂)

sin(θ₂) = (1 × sin(60°)) / 1.5

sin(θ₂) = sin(60°) / 1.5

θ₂ = arcsin(sin(60°) / 1.5)

θ₂ ≈ arcsin(0.86602540378 / 1.5)

θ₂ ≈ arcsin(0.57735026919)

θ₂ ≈ 35.26°

neco 2023 physics obj and essay answers

(i) Electric motors: Electromagnets are used in electric motors to convert electrical energy into mechanical energy. An electric motor contains an armature with a coil of wire that rotates within a magnetic field created by an electromagnet.

(ii) Magnetic resonance imaging (MRI): Electromagnets are used in MRI machines to create a strong magnetic field that aligns the protons in the body’s tissues. Radio waves are then used to create images of the body’s internal structures.

The soft iron bar can be converted to a magnet by placing it in contact with a bar magnet. When the bar magnet is brought close to the soft iron bar, the magnetic domains in the soft iron bar become aligned with the magnetic field of the bar magnet. This causes the soft iron bar to become magnetized and it will now be able to attract other magnetic materials.

Reactance refers to the opposition that an electrical circuit or component exhibits to the flow of alternating current (AC). It is a fundamental concept in understanding AC circuits and is closely related to the concept of impedance.

Xc = 1/(2πfC)

Xc = Capacitive reactance in ohms (Ω)

π = 3.14 (approximate value)

f = Frequency in Hertz (Hz)

C = Capacitance in Farads (F)

Capacitive reactance (Xc) = 3000Ω

Capacitance (C) = 5µF = 5 * 10-⁶F

Rearranging the formula to solve for frequency (f):

f = 1/(2*π* Xc* C)

Substituting the given values:

f = 1/(2 * 3.14 * 3000 * 5 * 10-⁶ )

f = 1/(2 * 3.14 * 3000 * 0.000005)

f = 1/(6.28 * 0.015)

f = 1/0.0942

f=10.62Hz (approx. 2 decimal).

neco 2023 physics obj and essay answers

Photoelectrons are electrons that are emitted from a material when it absorbs electromagnetic radiation, typically in the form of photons (light). This phenomenon is known as the photoelectric effect.

Formula for threshold frequency;

F= Frequency

E = Work function(Energy)

h= Plank’s constant (6.6×10-³⁴)

Converting the work function to joules:

Work function (ϕ) = 3.5 eV = 3.5 × 1.6 × 10-¹⁹ J = 5.6 × 10-¹⁹ J

Substituting the values

F= 5.6 × 10-¹⁹/6.6×10-³⁴

F= 8.48×10¹⁴Hz

neco 2023 physics obj and essay answers

(i) Radiation exposure: X-rays are a type of ionizing radiation, which means that they can damage the DNA in cells and increase the risk of cancer. Exposure to high doses of X-rays can also cause radiation sickness, which can lead to nausea, vomiting, and hair loss.

(ii) Skin burns: X-rays can cause skin burns if the skin is exposed to a high dose of radiation. The severity of the burn depends on the dose of radiation and the duration of exposure.

(i) Soft X-rays have lower energy levels, while hard X-rays have higher energy level

(ii) Soft X-rays are commonly used in scientific research, such as studying atomic structures and electronic properties while Hard X-rays are more prevalent in medical and industrial applications, like diagnosing fractures, inspecting welds, or examining luggage at airports for security purposes.

(iii) Soft X-rays are more easily absorbed by matter than hard X-rays. As a result, softer X-rays are used to examine lighter elements, while harder X-rays are preferred for studying heavier elements in samples.

neco 2023 physics obj and essay answers

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See: NECO Civic Education Answers

NECO Physics Questions and Answers For Practice

The questions below are the NECO 2022 Physics Practice Questions. Go through them and be ready to score high in your NECO 2022 Physics Examination.

1. The equation X 150 62  => Y 150  63  + -1 + energy, represents

A. Alpha decay

B. Beta-decay

C. Gamma decay

D. Photon emission

ANSWER: B (Beta-decay)

2. The ice and steam points of a thermometer are 20mm and 100mm respectively. A temperature of 75 degree Celsius corresponds to Y mm on the thermometer. What is Y?

ANSWER: C (80mm)

3. When a yellow card is observed through a blue glass, the card would appear as

ANSWER: A (Black)

4. In a nuclear plant, the final mass of the products is 6.32×10^-27kg, while the initial mass of the reactant is 6.30×10^-27kg, the energy released in the process is (speed of light in vacuum 3.0×10^8m/s, 1eV = 1.6×10^-19J)

A. 11.25meV

B. 11.25 MJ

D. 12.25meV

ANSWER: A (11.25meV)

5. A 1.5kg stone was thrown vertically upward with an initial velocity of 42m/s, What is the potential energy of the stone at the highest point reached.

6. When two objects P and Q are supplied with the same quantity of heat, the temperature change in p is observed to be twice that of Q. The mass of P is half that of Q. The ratio of the specific heat of P to Q is

ANSWER: C (1:1)

7. The following statements were made by some students describing what happened during the determination of the melting point of solids

1. The temperature of the solid was constant until melting started

2. The temperature of the solid rose until melting started

3. During melting, the temperature was rising

4. During melting, the temperature was constant

5. The temperature continued to rise after all the solid had melted.

6. The temperature stopped rising after all the solid had melted. Which of the following gives correct statements in the right order?

A. 2, 4 and 5

B. 2, 3 and 6

C. 1, 3 and 6

D. 1, 3 and 5

ANSWER: A (2, 4, and 5)

8. A silver spoon and a wooden spoon are both at room temperature. The silver spoon is cooler to touch because silver

A. has a greater density

B. can be polished

C. is a less absorbent material than wood

D. is a better conductor of heat

ANSWER: D (is a better conductor of heat)

See: NECO Timetable

NECO Physics Essay Questions

1. (a) A student makes a model of an atom. The model contains 24 electrons, 25 protons and 26 neutrons. Some of these particles are inside a nucleus at the centre of the model. (i) Determine the nucleon number (mass number) of the atom. (ii) Explain why the model represents a charged atom. (iii) The student makes a new model of a different isotope of the same element. Describe the nucleus of this new model.

Ans:  1 (a) (i) 51 B1 (ii) more protons than electrons or different number of protons and electrons positive and negative do not cancel. (iii) 25 protons. a different number of neutrons.

2. Fig. 1.1 shows the distance-time graph for two cyclists A and B. They start a 500 m race together but finish the race at different times.

neco 2023 physics obj and essay answers

(a) Use Fig. 1.1 to determine (i) the distance between A and B at time t = 20s, (ii) the difference in the time taken by A and B for the race.

(b) Cyclist C starts the race at the same time as A and B and covers the first 200m of the race at a constant speed of 5.0 m/s. He then accelerates and finishes the race at t = 60s. (i) On Fig. 1.1, draw the distance-time graph for cyclist C. (ii) Calculate the average speed of cyclist C for the whole race.

Ans:  (a) (i) 60 m (ii) 12s (b) (i) straight line from origin to 200 m at 40s any line straight or curved from (40,200) to (60,500) (ii) s = d/t or 500/60 = 8.3m/s

Neco Physics Objective Sample Questions;

If a satellite travels at a constant speed round the earth in a circular orbit,

1. Which of the quantities in the list below are scalars. (a) acceleration (b) force (c) mass (e) speed.

2. The velocity of the satellite changes, but its speed is constant. State what is meant by velocity…………………….

3. Explain why the velocity changes……………………………

4. Explain what makes this satellite move in an orbit that is circular

Have a Target and Work Towards Actualizing it 

You have decided to pass NECO Physics 2023 and I am sure of that. Now, the next thing you should do is set targets.

You have told yourself, “I will score A in Neco Physics 2023”, that’s not all. You need to plan on how to make it happen. Create a timetable and master plan to achieve your goals.

Get the Recommended Textbook on Physics  for 2023 NECO Examination

Normally, NECO recommends books for the examination. But apart from NECO English Literature where certain novels are compulsory, you are free to use any good English Language textbook to prepare for NECO 2023 exam.

Some textbooks are more difficult to understand. If you have any topic you are finding difficult to understand, then get a textbook that will simplify the topics and make life better for you.

 Do not Skip Physics Examples and Exercise you Will Come Across While Reading: 

Many candidates are fond of skipping exercises and even examples while studying textbooks. In fact, we like notebooks so much that we could ask, “can I read my notebook and pass NECO Physics 2023?” Don’t be scared of attempting exercises in Biology. Face the challenges.

Note: The above questions are likely NECO Physics Questions and Answers, not the real questions

If you have any questions about the  NECO Physics Questions and Answers 2023 , kindly drop your question in the comment box.

Last Updated on July 27, 2023 by Admin

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NECO Physics Questions and Answers 2023 Objective and Essay

  • Post author: Study Admin
  • Post published: October 26, 2023
  • Post category: School News
  • Post comments: 0 Comments

NECO physics 2023 answers are now available. NECO physics questions and answers 2023/2024 objective and essay and other exam details for NECO 2023 are on this page. See the 2023 NECO physics answers for both objective and theory below. Get the NECO physics objective and essay answers here.

The 2023 physics NECO OBJ and theory questions and answers are provided here for free. All you have to do is to go through the questions and take note of the NECO physics answers 2023. Read on to find out.

Have you been searching on Google in order to get the NECO physics questions and answers 2023? If so, we have got you covered!

We have the 2023 NECO physics questions and our team of experts will soon upload the NECO physics questions and their accurate answers to help you pass the 2023 NECO physics examination.

The 2023 NECO physics theory questions and OBJ will be uploaded any moment from now. So if you are searching for the NECO physics answers 2023 for objective and theory, then you are on the right page. See NECO physics objective and essay questions and answers below.

NECO Physics Answers 2023 Objective and Theory

The National Examination Council (NECO) is an examination body in Nigeria that conducts the Senior Secondary Certificate Examination and the General Certificate in Education in June/July and November/December respectively.

The 2023 NECO physics questions are set from the SS1 to SS3 physics syllabus. So all the questions you will encounter in this year’s examination are in the syllabus, and nearly 95% of the questions are repeated.

You don’t have to worry about the 2023 NECO physics questions and answers PDF (essay and objective). The NECO physics answers 2023 will be uploaded any moment from now. All you need to do is to keep refreshing this page so as not to miss out.

Once again, keep refreshing this page because we will upload the original NECO physics questions and answers for this year’s exams on this page at any moment from now. Also, to download the past questions and answers, click on this link NECO physics past questions .

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The 2023 NECO physics answers will be posted here. Be patient. Keep checking and reloading this page for the correct answers. NECO 2023 physics answers loading…….

There is nothing like NECO physics expo 2023 online. All students are advised to avoid all patronizing online fraudsters/vendors who claim to provide such services.

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Physics-Obj 01-10: EADCAEBEBC 11-20: ECDDCDBCCB 21-30: CECBEADCBB 31-40: BADDCDCAAA 41-50: EDACDCACAA 51-60: CEBACCBCAC

PHYSICS-ANSWERS! (1a) (i) Solar water heaters: These are devices that use solar collectors to absorb energy from the sun and heat water for domestic or industrial use.

(ii) Solar air heaters: These are devices that use solar collectors to absorb energy from the sun and heat air for space heating or ventilation purposes.

neco 2023 physics obj and essay answers

(1c) Total Magnification = Magnification of Objective Lens × Magnification of Eyepiece Lens

Given, Total Magnification = 10 Magnification of Objective Lens = 2

Let “E” represent the magnification of the eyepiece lens.

10 = 2 × E E = 10/2 E = 5

(2a) Static friction is a type of friction that exists between two surfaces in contact with each other when they are not moving relative to each other.

(2b) Coefficient of static friction (μs) = Force of static friction/ Normal force

Give: Force of static friction = 3N Normal force = 5N μs = 3N / 5N = 0.6

neco 2023 physics obj and essay answers

(4a) The velocity ratio of a machine is the ratio of the distance moved by the effort to the distance moved by the load. It is a measure of the effectiveness of a machine in transmitting force.

Velocity ratio = distance moved by effort / distance moved by load

(4b) A second order lever has the load in the middle, with the effort applied on one side and the fulcrum on the other. The effort arm is longer than the load arm, which means the machine has a mechanical advantage. Examples of second order levers include wheelbarrows and nutcrackers WHILE A third order lever has the effort applied on one end, the load on the other end, and the fulcrum in between. The load arm is longer than the effort arm, which means the machine has a mechanical disadvantage. Examples of third order levers include tweezers and shovels.

(7) Given: – Angle of incidence (θ₁) = 60° – Speed of light in air = 3×10⁸ m/s – Speed of light in glass = 2×10⁸ m/s The refractive index (n) of a medium can be calculated using the formula: n = speed of light in vacuum / speed of light in the medium Refractive index of air (n₁): n₁ = speed of light in vacuum / speed of light in air n₁ = 3×10⁸ m/s / 3×10⁸ m/s n₁ = 1 Refractive index of glass (n₂): n₂ = speed of light in vacuum / speed of light in glass n₂ = 3×10⁸ m/s / 2×10⁸ m/s n₂ = 1.5 Using Snell’s law to find the angle of refraction (θ₂): n₁ × sin(θ₁) = n₂ × sin(θ₂) 1 × sin(60°) = 1.5 × sin(θ₂) sin(θ₂) = (1 × sin(60°)) / 1.5 sin(θ₂) = sin(60°) / 1.5 θ₂ = arcsin(sin(60°) / 1.5) θ₂ ≈ arcsin(0.86602540378 / 1.5) θ₂ ≈ arcsin(0.57735026919) θ₂ ≈ 35.26°

(8a) (i) Electric motors: Electromagnets are used in electric motors to convert electrical energy into mechanical energy. An electric motor contains an armature with a coil of wire that rotates within a magnetic field created by an electromagnet. (ii) Magnetic resonance imaging (MRI): Electromagnets are used in MRI machines to create a strong magnetic field that aligns the protons in the body’s tissues. Radio waves are then used to create images of the body’s internal structures. (8b) The soft iron bar can be converted to a magnet by placing it in contact with a bar magnet. When the bar magnet is brought close to the soft iron bar, the magnetic domains in the soft iron bar become aligned with the magnetic field of the bar magnet. This causes the soft iron bar to become magnetized and it will now be able to attract other magnetic materials.

(9a) Reactance refers to the opposition that an electrical circuit or component exhibits to the flow of alternating current (AC). It is a fundamental concept in understanding AC circuits and is closely related to the concept of impedance. (9b) Xc = 1/(2πfC) where: Xc = Capacitive reactance in ohms (Ω) π = 3.14 (approximate value) f = Frequency in Hertz (Hz) C = Capacitance in Farads (F) Given: Capacitive reactance (Xc) = 3000Ω Capacitance (C) = 5µF = 5 * 10-⁶F π = 3.14 Rearranging the formula to solve for frequency (f): f = 1/(2*π* Xc* C) Substituting the given values: f = 1/(2 * 3.14 * 3000 * 5 * 10-⁶ ) f = 1/(2 * 3.14 * 3000 * 0.000005) f = 1/(6.28 * 0.015) f = 1/0.0942 f=10.62Hz (approx. 2 decimal)

(10a) Photoelectrons are electrons that are emitted from a material when it absorbs electromagnetic radiation, typically in the form of photons (light). This phenomenon is known as the photoelectric effect. (10b) Formula for threshold frequency; F = E/h Where, F= Frequency E = Work function(Energy) h= Plank’s constant (6.6×10-³⁴) Converting the work function to joules: Work function (ϕ) = 3.5 eV = 3.5 × 1.6 × 10-¹⁹ J = 5.6 × 10-¹⁹ J Substituting the values F = E/h F= 5.6 × 10-¹⁹/6.6×10-³⁴ F= 8.48×10¹⁴Hz

(11a) (i) Radiation exposure: X-rays are a type of ionizing radiation, which means that they can damage the DNA in cells and increase the risk of cancer. Exposure to high doses of X-rays can also cause radiation sickness, which can lead to nausea, vomiting, and hair loss. (ii) Skin burns: X-rays can cause skin burns if the skin is exposed to a high dose of radiation. The severity of the burn depends on the dose of radiation and the duration of exposure. (11b) (i) Soft X-rays have lower energy levels, while hard X-rays have higher energy level (ii) Soft X-rays are commonly used in scientific research, such as studying atomic structures and electronic properties while Hard X-rays are more prevalent in medical and industrial applications, like diagnosing fractures, inspecting welds, or examining luggage at airports for security purposes. (iii) Soft X-rays are more easily absorbed by matter than hard X-rays. As a result, softer X-rays are used to examine lighter elements, while harder X-rays are preferred for studying heavier elements in samples.

neco 2023 physics obj and essay answers

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2023 NECO Physics Theory and Objective Questions and Answers

The National Examination Council (NECO) Has Scheduled The 2023 Neco Physics Theory and Objective Questions and Answers Paper To Kick off Today Thursday 27th July 2023.

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(1a) A control account in financial accounting is a general ledger account that summarizes the total balances or transactions of a subsidiary ledger. It serves as an overview or summary of individual accounts within a specific category, allowing for a more organized and streamlined recording and monitoring of financial transactions.

(1b) (PICK ANY FOUR) (i) Non-profit organizations are driven by a specific mission or purpose, often focused on benefiting society or a particular cause.

(ii) Non-profits are restricted from distributing profits or surpluses to individuals or shareholders.

(iii) Non-profits typically rely on donations, grants, or volunteer efforts to support their operations and achieve their goals.

(iv) Non-profits are accountable to their stakeholders, including donors, volunteers, and the public.

(v) Non-profits are often focused on achieving social impact and positive outcomes rather than financial returns.

(vi) Non-profits deliver programs and services that align with their mission.

(vii) Non-profits often qualify for tax-exempt status, meaning they are not required to pay income taxes on their earnings.

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(10a) Photo-electrons are particles of light, or photons, that are emitted when a photon of sufficient energy strikes a material. They are the result of the photoelectric effect, which is the emission of electrons from a material when it is exposed to electromagnetic radiation. Photo-electrons are typically used in photoelectric detectors, which are used to measure the intensity of light.

(10b) Threshold frequency = (Work function x 1.6×10^-19 J) / (h x 66×10^-34 Js)

Threshold frequency = (3.5eV x 1.6×10^-19 J) / (66×10^-34 Js) Threshold frequency = 2.27×10^14 Hz ========================== NUMBER 11

(11a) Pick any two(2)

1. Radiation Exposure: X-rays are a form of ionizing radiation, which can cause damage to living tissue, including skin and organs. 2. Cancer Risk: Lon

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NECO Physics Answers for 2023 Questions Released.

The Neco physics answers 2023 for SSCE questions are now available for exam candidates. The National Examination Council (NECO) Senior School Certificate Examination (SSCE) Physics paper will be written on Thursday 27th July 2023.

The O’Level Neco physics questions below are for Paper III & II: Objective & Essay which will commence at 10.00 am and end by 1.00 pm. That means the examination will last for three hours. Continue reading.

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NECO Physics Answers 2023 Questions.

1. (a) 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 ] (b) A spiral spring with a metal extends by 10.5cm in the 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)

2. (a) Explain diffusion. (b) Give one reason why the rate of diffusion is higher in gasses than in liquid at the same temperature.

3. (a) State two conditions under which photo-electrons can be emitted from the surface of a metal. (b) List two particles characteristics of electromagnetic waves. ANS: (a) Conditions for emission of photoelectrons – the wavelength of incident radiation must be less than the threshold wavelength of the metal surface. – the frequency of incident radiation must be greater than the threshold frequency. – the energy of the incident photons (radiation) must be greater than the Work function of the metal (b) Particle characteristics of electromagnetic waves; e.g – Photoelectric effect – Thermionic emission – Radiations from heated bodies (Black body) – Emission and absorption of light  (incandescence) – Compton effect.

4. (a) Explain how gas can be made to conduct electricity. (b) Name the electric charge carriers in gases. ANS: (a) The molecules /atoms of a gas must be ionized before the gas can conduct electricity. Ionization of the gas requires that the gas pressure is very low within the enclosure and a very high voltage is applied to the enclosed gas. (b) Charge carries in gases are Electrons; Ions

5. State; (a) two applications of electrolysis in an industry; (b) one application of electrolysis in a school laboratory.

6. (a) (i) What is an eclipse? (ii) List the three types of eclipse. (b) A student in a lecture theatre can read from the board clearly but requires a pair of spectacles to read from a book. (i) What eye defect has this student? (ii) What type of lens is needed to correct the eye defect? (iii) The focal length of the lens used to correct this defect is 10 cm. Calculate the power of the lens. (c) A car B moves towards a stationary car A.  If B produces an ultrasonic sound at a point and it takes 5.6 x 10-3  s for a beep to be heard in B, calculate the distance between the two cars at that instant. (Speed of sound in air = 340 ms-1) (d) The image of an object is located 9 cm behind a convex mirror.  If the magnification produced is 0.6, calculate the focal length of the mirror.

7. (a) (i) What is a vector quantity ? (ii) Three vectors 3 ms-1 N 45o W, 12 ms-1W, and 5ms-1 S act at a point. (iii) Sketch a vector diagram to illustrate the given information. (iv) Calculate the resultant of the vectors. (b) In a laboratory experiment to determine the force constant of a spiral spring, the mass on the spring was varied and the corresponding extensions were measured and recorded as shown in the table below.

(i) Copy and complete the table.  (Take g = 10ms-2 ) (ii) Plot a graph with weight, W, on the vertical axis and extension, e, on the horizontal axis. (iii) Using the graph, determine the force constant of the spring. (iv) Determine the natural length of the spring if its length was 38.0 cm when loaded with 250 g mass.

8. (a) Define heat capacity and state its unit. (b) List two effects of heat on a substance (c) Explain how a tightly fitted glass stopper could be removed from a reagent bottle. (d) A quantity of pepper soup of mass 800g poured into a plastic container with a tight fitting lid has a temperature of 30oC. The container is then placed in a microwave oven, rated 1200 W, and operated for 3 minutes. (i) Calculate the final temperature attained by the soup.  (Assuming no heat losses). (ii) Explain why containers with tight-fitting lids are not suitable for use in microwave cooking. (iii) When the soup is brought out and allowed to cool, a dent was observed on the container. Explain. [ Take specific heat capacity of the soup  =  4000 Jkg-1 K-1 ]

9. (a) State the three characteristics of sound and the factor on which each of them depends. (b) Explain resonance as applied to sound. (c) Explain why sound waves cannot be plane polarized. (d) What role does echo play in the construction of a concert hall? (e) The surface of an eardrum (assumed circular) has a radius 2.1 mm.  It resonates with an amplitude of 0.8 x 10-7 m as a result of impulses received from an external body vibrating at 2400 Hz. If the resulting pressure change on the eardrum is 3.6 x 10-5 Nm-2. Calculate the: (i) period of oscillation (ii) velocity (iii) acceleration (iv) force. [Pi =  3.14]

10. (a) Define electromotive force. (b) State: (i) the principle of operation of a potentiometer; (ii) two advantages that a potentiometer has over a voltmeter in measuring the potential difference. (c) (i) Sketch and label a diagram of a gold-leaf electroscope. (ii) Give one use of a gold-leaf electroscope. (d) (i) Explain the action of a magnetic relay: (ii) List two factors that determine the magnitude of an induced emf in a coil. (iii) A current of 5 A passes through a straight wire in a uniform magnetic field of flux density 2.0 x 10-3 T.  Calculate the force per unit length exerted on the wire when it is inclined at 30o to the field.

11. (a) Write Einstein’s photoelectric equation and identity each component of the equation.

(b) For a photocell, state one factor each that is responsible for the: emission; r ate of emission; energy of photoelectrons.

(c) (i) Two nuclear equations are given below: +    ……………………..equation A +    ……………………..equation B Determine the values of: (p and q in equation A; (β)   m  and n in equation B and identify X. (ii) Give a reason why it is important to dispose of radioactive waste safety. (d) (i) A certain atom emits ultra-violet photon of wavelength 2.4 x 10-7m Calculate the energy of the photons

(i) – 6.0 x 10-19J

(ii) -8.2 x 10-19J -8.8 x 10-19J -1 6.7 x 10-19J

[h  =  6.6 x 10-34 Js;  c = 3.0x 108 ms-1]

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Neco Physics Text Message Runs

Through this process, Candidates are expected to receive answers via SMS platform otherwise called offline method. This is best for candidates who does not have internet connection, however images will not be sent to subscribers.

Online Password Link Answers

As the name implies, Candidates are given a four or three digit code to bypass and view already prepared answers on Mr Legit portal, it requires internet connection, due to some circumstances beyond our direct control, this method is no longer in use by crew members.

How to Get Neco Physics Exam Answers

To get Neco Physics Exam Expo Runs Questions and Answers, there are lay down procedures to follow :

Price for Neco Physics Exam Answers is N800 each

Pay either through Mobile Transfer to our account or buy Mtn Recharge Card.

  • Phone number to 09060948147

Neco Physics Exam Schedule

From the Neco Released exam timetable document, Neco Physics Objective, Essay will kick start on Thursday 28th July 2023.

Thursday 28th July

  • Paper III & II: Objective & Essay – Physics  ›  10:00 am – 1:00 pm

WAEC Exam Questions and Answers 

Following the change of normal routine on the pattern of exams, you can as well subscribe for Waec Exam that’s coming this August, do the needful and follow the link below : How to Get WAEC Expo Answers 2023

What is Neco Exam Objective 

The National Examination Council (also known as NECO) is an examination body that is responsible for conducting the National Common Entrance Examination (NCEE), Basic Education Certificate Examination (BECE), Senior School Certificate Examination (SSCE) Internal and External for students. The exam body is currently chaired by Professor Charles Uwakwe. 

How to Check NECO Result Online?

After most exams, candidates are required to check their results to enable know the level of their performance, also to check if if they can go further with the academic pursuit. To check NECO result, visit the official result checker portal. Click on Check Neco result to learn the steps in checking NECO result online. 

Mr Legit Exam Contact Details 

Mr Legit only official contact remains 09060948147. Our Number is available on Telegram, WhatsApp etc.

Must Read – Neco Expo 2023 WhatsApp Group Link

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This is to say that Neco Gce physics Obj & theory Expo 2023 Runs Questions and Answers Subscription has commenced online so you can pay. Be part of your success by following the guidelines provided on this article.

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Get Neco Gce physics obj and theory Answers sent to you via Whatsapp or direct text message few hours before the commencement of any exam as stated in the timetable.

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