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# Physics NECO exam past questions and answers

## Physics NECO exam past questions and answers

Here they are;

Question: What is the SI unit of force?

A) Newton
B) Joule
C) Watt
D) Pascal
Question: Which law of motion states that an object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by a net external force?

A) Newton's First Law
B) Newton's Second Law
C) Newton's Third Law
D) Law of Gravitation
Question: What is the formula for calculating kinetic energy?

A) KE = \frac{1}{2}mv^2KE=
2
1
​
mv
2

B) KE = mghKE=mgh
C) KE = FdKE=Fd
D) KE = \frac{mv}{t}KE=
t
mv
​

2
1
​
mv
2

Question: In which type of circuit are the components connected in a single pathway?

A) Parallel circuit
B) Series circuit
C) Complex circuit
D) Combination circuit
Question: What is the acceleration due to gravity on Earth's surface (approximately)?

A) 9.8 m/s²
B) 6.3 m/s²
C) 12.5 m/s²
D) 5.2 m/s²
Question: According to the law of conservation of energy, energy cannot be created or destroyed, only ___________.

A) Transformed
B) Multiplied
C) Dissipated
D) Created
Question: What is the unit of electrical resistance?

A) Ohm
B) Ampere
C) Volt
D) Watt
Question: Which type of wave requires a medium (solid, liquid, or gas) to propagate?

A) Transverse wave
B) Longitudinal wave
C) Electromagnetic wave
D) Standing wave
Question: What is the relationship between the pressure and volume of a gas at constant temperature? (Boyle's Law)

A) P \propto VP∝V
B) P \propto \frac{1}{V}P∝
V
1
​

C) P \propto TP∝T
D) P \propto \frac{1}{T}P∝
T
1
​

Question: Which of the following is a vector quantity?

A) Speed
B) Distance
C) Mass
D) Velocity
Question: What is the law of reflection for light?

A) The angle of incidence is equal to the angle of refraction.
B) The angle of incidence is equal to the angle of reflection.
C) The angle of refraction is greater than the angle of incidence.
D) Light does not follow the law of reflection.
Answer: B) The angle of incidence is equal to the angle of reflection.
Question: Which of the following is a fundamental particle in an atom with a negative charge?

A) Proton
B) Neutron
C) Electron
D) Nucleus
Question: What is the unit of electric current?

A) Volt
B) Ohm
C) Ampere
D) Watt
Question: Which law states that the total electric flux through a closed surface is equal to the net electric charge inside the surface divided by the permittivity of free space?

A) Gauss's Law
C) Ampere's Law
D) Coulomb's Law
Question: What does the term "Ohm's Law" describe?

A) The relationship between current and voltage in a circuit.
B) The relationship between force and acceleration.
C) The relationship between pressure and volume in a gas.
D) The relationship between temperature and volume in a gas.
Answer: A) The relationship between current and voltage in a circuit.
Question: What is the primary function of a concave lens?

A) To converge light
B) To diverge light
C) To magnify images
D) To correct farsightedness
Question: Which principle states that the total energy of an isolated system remains constant over time?

A) Law of Conservation of Energy
B) Bernoulli's Principle
C) Archimedes' Principle
D) Hooke's Law
Answer: A) Law of Conservation of Energy
Question: What is the relationship between frequency and wavelength in a wave?

A) \text{Frequency} = \frac{\text{Wavelength}}{\text{Speed}}Frequency=
Speed
Wavelength
​

B) \text{Frequency} = \text{Wavelength} \times \text{Speed}Frequency=Wavelength×Speed
C) \text{Frequency} = \frac{\text{Speed}}{\text{Wavelength}}Frequency=
Wavelength
Speed
​

D) \text{Frequency} = \text{Wavelength} + \text{Speed}Frequency=Wavelength+Speed
Wavelength
Speed
​

Question: In nuclear physics, what does the term "half-life" refer to?

A) The time it takes for half of a radioactive substance to decay.
B) The time it takes for a particle to travel half of its trajectory.
C) The time it takes for a photon to lose half of its energy.
D) The time it takes for a planet to complete half of its orbit.
Answer: A) The time it takes for half of a radioactive substance to decay.

Question: Which law states that the total electric current flowing into a junction is equal to the total current flowing out of the junction in a circuit?

A) Ohm's Law
B) Kirchhoff's Voltage Law
C) Kirchhoff's Current Law