NECO 2024 Physics (OBJ/ESSAY) Questions and Answers 

This is to inform all students preparing for the 2024 NECO SSCE exams and the school administrators that the June/July NECO Physics ESSAY//OBJ Questions and Answers for 2024 are now available. The exam will commence on Tuesday, 8th July 2024

NECO 2024 Update

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NECO 2024 PHYSICS (ESSAY & OBJ) QUESTIONS: 

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PHYSICS ESSAY:

NUMBER 1

(1ai)
(i) Voltage transformation: Transformers are used to step up or step down voltages, making them a crucial component in power transmission systems.
(ii) Efficient transmission: Transformers enable efficient transmission of power over long distances with minimal loss of energy.
(iii) Isolation: Transformers provide electrical isolation between the primary and secondary circuits, ensuring safety and preventing interference.

(1aii)
Diagram

(1b)
Area = Length x Width
= 100 m x 500 m
= 50,000 m²

Area (acres) = Area (m²) / 4047 m²/acre
= 50,000 m² / 4047 m²/acre
= 12.35 acres

Solving/Typing…

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NUMBER 2

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NUMBER 3

(3a)
A rolling wheel

(3b)
Given:
F1 = 8 N (acting horizontally)
F2 = 5 N (acting vertically, at a right angle to F1)

Using the Pythagorean theorem:

F = √(F1² + F2²)
= √(8² + 5²)
= √(64 + 25)
= √89
= 9.43 N(3a)
A rolling wheel

(3b)
Given:
F1 = 8 N (acting horizontally)
F2 = 5 N (acting vertically, at a right angle to F1)

Using the Pythagorean theorem:

F = √(F1² + F2²)
= √(8² + 5²)
= √(64 + 25)
= √89
= 9.43 N

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NUMBER 4

NUMBER 5

NUMBER 5

(5a)
Heat capacity of a body is the amount of heat energy required to change the temperature of the body by a given amount. It is measured in joules per kelvin (J/K).

(5b)
Q = mcΔT

where:
Q = heat energy (in joules, J)
m = mass of water (in kilograms, kg)
c = specific heat capacity of water (in J/kgK)
ΔT = temperature change (in kelvin, K)

Given values:
m = 100 g = 0.1 kg (converted to kilograms)
c = 4200 J/kgK
ΔT = 20°C = 20 K (since 1°C = 1 K)

Plugging in the values:

Q = 0.1 kg × 4200 J/kgK × 20 K
= 8400 J
= 8.4 kJ

 

No 4 👇

No 7

No 5

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