# NECO Physics Questions and Answers 2022/2023 | Essay and Objective.

###### NECO Physics Questions and Answers 2022/2023 | Essay and Objective.

NECO Physics 2022 Exam Questions and Solutions. In this post, I’ll provide you with free access to the NECO Physics objective and theory solutionsneco-physics-questions-and-answers-

Additionally, you’ll comprehend how NECO Physics questions are constructed and how to respond to them.

The Senior Secondary Certificate Examination and the General Certificate in Education are administered by Nigeria’s National Examinations Council (NECO) every June/July and December/January, respectively.Agricultural science NECO 2022/2023

2022 NECO Physics Essay Questions And Answers (Expo)

during the NECO Physics exam, a link to the 2022 NECO Physics Expo will be posted here. For the solutions, keep checking and refreshing this page.

Answers for NECO Physics OBJ: Soon, the solutions will be shared here. Stay calm; we’re solving.Marketing NECO Questions and Answers 2022/2023

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

ECDABCCEBA: 1-10

AABBEACCCE: 11-20

CEECCBCBDB: 21-30

DCAEDBCDCB: 31-40

CCCBEECBBD: 51-60

(1a)

(i) Tubes, fins or passages for conducting or directing the heat transfer fluid from the inlet to the outlet.

(ii) Abserver plate which may be flat, corrugated or grooved with tubes, fins or passages attached to it.

(1b)

A microsatellite called NigeriaSat-1 is used to monitor disaster management and numerous mapping projects. WHILE A giant satellite called NigercomSat-1 is in charge of fostering operator competition in the market and ensuring the delivery of high-quality and effective communications services.

(1c)

V = image

U = Object

V = 2u

1/f₀ = (1/V) + (1/u)

1/f₀ = (1/2u) + (1/u)

1/f₀ = (1+2)/2u

1/f₀ = 3/2u

f₀ = 2u/3

Magnification = (V/f₀ + 1)

M = [2u/(2u/3)] + 1

M = [(2u/1) x (3/2u)] + 1

M = 3 + 1

M = 4

(2a)

Scalar quantities are added using standard algebraic techniques; they have magnitude but no direction. While vector quantities are added using geometrical procedures, they contain both magnitude and direction.

(2b)

r²=3²+4²

=9+16

=25

r=✓25

r=5n

(3i)

The principle of floatation states that when an object floats in a liquid the buoyant force/upthrust that acts on the object is equal to the weight of the object.

Weight of the object (W) = upthrust (F)

(3ii)

(i) Volume of the object

(ii) Density of the liquid

(4i)

E= mgh = 40 X 10 X 0.3 X 6= 720J

(4ii)

P= mgh/t

m= PT/GH= 60 X 12 / 10 X 0.3 X 6 = 40g

(5a).

Positive charge: This type of charge can be produced by rubbing a glass rod with silk.

(5b)

P₁ = 600mmHg

V₁ = 500cm³

T₁ = 23°C + 273.15 = 296.15K

T₂ = 37°C + 273.15 = 310.15K

P₂ = 720mmHg

V₂ =?

P₁V₁/T₁ = P₂V₂/T₂

V₂ = (P₁V₁T₂)/T₁P₂

V₂ = (600 x 500 x 310.15)/(296.15 x 720)

V₂ = (93045000)/213228

V₂ = 436.36cm³

(6a)

Particles in longitudinal waves flow horizontally in the path of the wave,while those in transverse waves move perpendicularly in that direction.

(6b)

(i) Water waves

(ii) Sound waves

(7)

(i) The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.

(ii)

– Kaleidoscope

– Periscope

(7i)

SELECT ANY ONE

(i)The incident ray’s angle with the normal is identical to the reflected ray’s angle with the normal.

(ii) The plane in which the incident ray, the normal ray, and the reflected ray are all located.

(iii) The incident and reflected rays are situated on opposite sides of the usual plane.

(7ii)

{PICK ANY TWO}

(i) Colorimeter

(ii) spectrophotometer

(iii) Periscope

(iv) kaleidoscope

(8a)

The resistance per unit length and cross-sectional area. It is the property of the material that opposes the flow of charge or the flow of electric current and it’s known as the resistivity of a wire. The unit of resistivity is ohm metre. We know that R = ρ L / A.

(8b).

R = ρ L / A.

ρ = R A /L

A = ρ L / R

A= 3.0 x 10^-6 x 4 / 0.5

A = 1.2 x 10^-5 / 0.5

A = 2.4 x 10^-5 m²

(12a)

(i) It makes walking and running possible.

(ii) It enables gripping of belt in machines possible.

(iii) It enables nails to stay in the wall when driven.

(12b)

(i) It always resists the motion, so extra energy is required to overcome it.

(ii) It causes wear and tear of machines.

(iii) It decreases the life expectancy of moving parts of vehicles.

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 X15062 => Y150 63 + -1 + energy, represents

A. Alpha decay

B. Beta-decay

C. Gamma decay

D. Photon emission

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?

A. 100 mm

B. 70 mm

C. 80 mm

D. 60 mm

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

A. Black

B. Green

C. Red

D. White

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

C. 12.25MJ

D. 12.25meV

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

A. 3.15J

B. 13.23J

C. 26.46J

D. 63.00J

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

A. 1:4

B. 4:1

C. 1:1

D. 2:1

7. Some students made the following statements 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)

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) state the nucleon number (mass number) of the atom.

(ii) Give reasons 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.

(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 options below are scalar quantities?

(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. State the reason why velocity changes.

4. State the reason why this satellite moves in an orbit that is circular.

Set a goal and work toward achieving it.

I am confident that you have made the decision to succeed in NECO Physics 2022. Setting goals is the next thing you should do.

Not only have you promised yourself, “I will get an A in Neco Physics 2022,” but this isn’t all. You must establish a plan for how to implement it. To attain your goals, make a master strategy and timeframe.

Purchase the recommended physics textbook for the 2022 NECO exam.

NECO typically suggests literature for the test. You may use any reputable physics textbook to study for the NECO 2022 exam.

Some texts are more challenging to comprehend. If you have any questions,Get a textbook that will clarify any things you are having trouble understanding so that your life will be better.

Don’t skip the physics exercises and examples you’ll encounter while reading:

While reading textbooks, many applicants enjoy skipping exercises and even examples. We even have the question, “Can I read my notebook and pass NECO Physics 2022?” because we love notebooks so much. Don’t be afraid to try the physics exercises. Take on the obstacles.

Note: The questions above are probably NECO Physics Questions and Answers; the actual questions may differ.