100 Current JAMB Past Questions and Answers on Physics for 2025/2026
100 Current JAMB Past Questions and Answers on Physics for 2025/2026
Here are 100 current JAMB Physics past questions and answers, compiled from recent examinations and trusted educational resources. These questions cover a wide range of topics to aid your preparation for the 2025/2026 UTME.
1–20: Mechanics and Motion
-
A car accelerates uniformly from rest to a speed of 20 m/s in 10 seconds. What is its acceleration?
A) 2 m/s²
B) 0.5 m/s²
C) 4 m/s²
D) 1 m/s²
Answer: A) 2 m/s² -
A body is thrown vertically upward with a velocity of 30 m/s. How long does it take to reach the highest point? (g = 10 m/s²)
A) 3 s
B) 6 s
C) 1.5 s
D) 2 s
Answer: A) 3 s -
Which of the following is a scalar quantity?
A) Velocity
B) Displacement
C) Force
D) Speed
Answer: D) Speed -
A force of 10 N acts on a mass of 2 kg. What is the acceleration produced?
A) 5 m/s²
B) 20 m/s²
C) 0.2 m/s²
D) 12 m/s²
Answer: A) 5 m/s² -
The moment of a force is the product of the force and the:
A) Mass
B) Distance from the pivot
C) Time
D) Velocity
Answer: B) Distance from the pivot -
A machine has a mechanical advantage of 4 and a velocity ratio of 5. What is its efficiency?
A) 80%
B) 100%
C) 20%
D) 25%
Answer: A) 80% -
The SI unit of pressure is:
A) Pascal
B) Newton
C) Joule
D) Watt
Answer: A) Pascal -
A body of mass 5 kg is lifted through a height of 10 m. Calculate the work done. (g = 10 m/s²)
A) 500 J
B) 50 J
C) 5 J
D) 100 J
Answer: A) 500 J -
The energy possessed by a body due to its motion is called:
A) Potential energy
B) Kinetic energy
C) Thermal energy
D) Chemical energy
Answer: B) Kinetic energy -
Which of the following quantities is conserved in an elastic collision?
A) Momentum only
B) Kinetic energy only
C) Both momentum and kinetic energy
D) Neither momentum nor kinetic energy
Answer: C) Both momentum and kinetic energy -
A man pushes a box with a force of 50 N over a distance of 5 m. Calculate the work done.
A) 250 J
B) 10 J
C) 55 J
D) 45 J
Answer: A) 250 J -
The acceleration due to gravity on the surface of the Earth is approximately:
A) 9.8 m/s²
B) 10 m/s²
C) 9.0 m/s²
D) 8.5 m/s²
Answer: A) 9.8 m/s² -
Which of the following is not a vector quantity?
A) Displacement
B) Velocity
C) Speed
D) Acceleration
Answer: C) Speed -
A car travels 100 km in 2 hours. What is its average speed?
A) 50 km/h
B) 100 km/h
C) 25 km/h
D) 75 km/h
Answer: A) 50 km/h -
The tendency of a body to resist a change in its state of motion is called:
A) Inertia
B) Momentum
C) Force
D) Acceleration
Answer: A) Inertia -
A body of mass 10 kg is moving with a velocity of 5 m/s. Calculate its momentum.
A) 50 kg·m/s
B) 15 kg·m/s
C) 5 kg·m/s
D) 2 kg·m/s
Answer: A) 50 kg·m/s -
The unit of power is:
A) Joule
B) Watt
C) Newton
D) Pascal
Answer: B) Watt -
A machine with an efficiency of 75% has a mechanical advantage of 3. What is its velocity ratio?
A) 4
B) 3
C) 2.25
D) 5
Answer: A) 4 -
The pressure at the bottom of a liquid column depends on:
A) Density of the liquid and height of the column
B) Volume of the liquid
C) Surface area of the liquid
D) Temperature of the liquid
Answer: A) Density of the liquid and height of the column -
Which of the following is a unit of energy?
A) Watt
B) Newton
C) Joule
D) Pascal
Answer: C) Joule
100 Current JAMB Past Questions and Answers on Physics for 2025/2026
21–40: Properties of Matter and Heat
-
What is the unit of density in the SI system?
A) kg/m³
B) g/cm³
C) N/m³
D) kg/m
Answer: A) kg/m³ -
Which of these materials is most elastic?
A) Rubber
B) Glass
C) Steel
D) Copper
Answer: C) Steel -
If the pressure on a gas increases at constant temperature, its volume:
A) Increases
B) Decreases
C) Remains the same
D) Doubles
Answer: B) Decreases -
The rise of a liquid in a capillary tube is due to:
A) Osmosis
B) Viscosity
C) Surface tension
D) Density
Answer: C) Surface tension -
Which of these instruments measures atmospheric pressure?
A) Thermometer
B) Barometer
C) Hygrometer
D) Manometer
Answer: B) Barometer -
Boyle’s law shows the relationship between:
A) Pressure and temperature
B) Volume and temperature
C) Pressure and volume
D) Volume and density
Answer: C) Pressure and volume -
An increase in temperature causes the density of a substance to:
A) Increase
B) Decrease
C) Remain constant
D) Double
Answer: B) Decrease -
Which of the following is a good conductor of heat?
A) Wood
B) Glass
C) Iron
D) Plastic
Answer: C) Iron -
What is the boiling point of water at standard atmospheric pressure?
A) 50°C
B) 100°C
C) 120°C
D) 80°C
Answer: B) 100°C -
Heat energy can be transferred through vacuum only by:
A) Conduction
B) Convection
C) Radiation
D) Reflection
Answer: C) Radiation -
The specific heat capacity of a substance is defined as the:
A) Heat required to raise its temperature by 1°C
B) Heat required to melt it completely
C) Heat required to vaporize it
D) Heat required to cool it to absolute zero
Answer: A) Heat required to raise its temperature by 1°C -
The ability of a liquid to resist flow is known as:
A) Surface tension
B) Viscosity
C) Pressure
D) Friction
Answer: B) Viscosity -
The process of change from solid to gas without becoming liquid is:
A) Evaporation
B) Condensation
C) Sublimation
D) Freezing
Answer: C) Sublimation -
An object floats in water if its density is:
A) Equal to water
B) Less than water
C) More than water
D) Twice that of water
Answer: B) Less than water -
Which of the following laws explains the pressure difference in fluid columns?
A) Archimedes’ principle
B) Pascal’s law
C) Newton’s law
D) Boyle’s law
Answer: B) Pascal’s law -
The amount of heat required to convert a unit mass of solid to liquid at constant temperature is:
A) Specific heat capacity
B) Latent heat of fusion
C) Latent heat of vaporization
D) Melting point
Answer: B) Latent heat of fusion -
Which of the following materials expands the most when heated?
A) Water
B) Mercury
C) Glass
D) Air
Answer: D) Air -
A hydraulic press works based on which principle?
A) Boyle’s law
B) Newton’s law
C) Archimedes’ principle
D) Pascal’s principle
Answer: D) Pascal’s principle -
Which device is used to measure the relative density of liquids?
A) Barometer
B) Hydrometer
C) Thermometer
D) Voltmeter
Answer: B) Hydrometer -
When a solid is heated, the atoms:
A) Become lighter
B) Start vibrating faster
C) Expand into a liquid
D) Freeze instantly
Answer: B) Start vibrating faster
100 Current JAMB Past Questions and Answers on Physics for 2025/2026
41–60: Waves, Sound, and Light
-
Which of the following is not a mechanical wave?
A) Sound wave
B) Water wave
C) Radio wave
D) Seismic wave
Answer: C) Radio wave -
The speed of sound is fastest in:
A) Vacuum
B) Water
C) Air
D) Steel
Answer: D) Steel -
Which wave property explains the bending of waves around obstacles?
A) Reflection
B) Refraction
C) Diffraction
D) Interference
Answer: C) Diffraction -
Light travels fastest in:
A) Glass
B) Water
C) Air
D) Vacuum
Answer: D) Vacuum -
The frequency of a wave is the reciprocal of its:
A) Period
B) Wavelength
C) Speed
D) Amplitude
Answer: A) Period -
When light passes from air to glass, it:
A) Speeds up
B) Changes direction
C) Reflects completely
D) Increases in frequency
Answer: B) Changes direction -
The unit of frequency is:
A) m/s
B) Hz
C) J
D) N
Answer: B) Hz -
Which instrument is used to measure the speed of light?
A) Photometer
B) Spectrometer
C) Fizeau apparatus
D) Hydrometer
Answer: C) Fizeau apparatus -
A wave with a frequency of 10 Hz and wavelength 2 m has a speed of:
A) 20 m/s
B) 5 m/s
C) 12 m/s
D) 8 m/s
Answer: A) 20 m/s -
Echo is a result of:
A) Refraction
B) Diffraction
C) Reflection
D) Absorption
Answer: C) Reflection -
Which of these is a transverse wave?
A) Sound wave
B) Water wave
C) Seismic P-wave
D) Vibration in a spring
Answer: B) Water wave -
Which color of light is deviated the most by a prism?
A) Red
B) Green
C) Yellow
D) Violet
Answer: D) Violet -
The image formed by a plane mirror is always:
A) Real and inverted
B) Virtual and erect
C) Real and erect
D) Virtual and inverted
Answer: B) Virtual and erect -
When light passes through a small aperture, the effect observed is called:
A) Refraction
B) Dispersion
C) Diffraction
D) Reflection
Answer: C) Diffraction -
The loudness of a sound depends on its:
A) Frequency
B) Speed
C) Amplitude
D) Wavelength
Answer: C) Amplitude -
Which mirror is used in vehicle side mirrors?
A) Concave mirror
B) Convex mirror
C) Plane mirror
D) Parabolic mirror
Answer: B) Convex mirror -
Light rays bending at the interface of two media is known as:
A) Reflection
B) Refraction
C) Dispersion
D) Interference
Answer: B) Refraction -
Which phenomenon is responsible for the twinkling of stars?
A) Diffraction
B) Interference
C) Scattering
D) Atmospheric refraction
Answer: D) Atmospheric refraction -
The instrument used to view distant objects is a:
A) Microscope
B) Telescope
C) Periscope
D) Binoculars
Answer: B) Telescope -
The bending of light rays around corners is called:
A) Dispersion
B) Diffraction
C) Refraction
D) Reflection
Answer: B) Diffraction
100 Current JAMB Past Questions and Answers on Physics for 2025/2026
61–80: Electricity and Magnetism
-
The unit of electric current is:
A) Volt
B) Ohm
C) Ampere
D) Coulomb
Answer: C) Ampere -
An electric cell converts:
A) Mechanical energy to electrical energy
B) Electrical energy to chemical energy
C) Chemical energy to electrical energy
D) Heat energy to electrical energy
Answer: C) Chemical energy to electrical energy -
Which of the following materials is a good conductor of electricity?
A) Wood
B) Rubber
C) Copper
D) Glass
Answer: C) Copper -
The resistance of a conductor depends on its:
A) Length and area
B) Mass and volume
C) Weight and thickness
D) Height and volume
Answer: A) Length and area -
The unit of resistance is:
A) Ampere
B) Ohm
C) Watt
D) Volt
Answer: B) Ohm -
A current of 3 A flows through a resistor of 4 ohms. What is the voltage across it?
A) 12 V
B) 7 V
C) 1.33 V
D) 0.75 V
Answer: A) 12 V -
The instrument used to measure electric current is called:
A) Voltmeter
B) Ammeter
C) Rheostat
D) Galvanometer
Answer: B) Ammeter -
In which direction do magnetic field lines point?
A) South to North
B) North to South
C) East to West
D) West to East
Answer: B) North to South -
The part of a generator where electricity is produced is called the:
A) Rotor
B) Armature
C) Shaft
D) Coil
Answer: B) Armature -
A device that increases or decreases voltage is a:
A) Capacitor
B) Resistor
C) Transformer
D) Diode
Answer: C) Transformer -
Ohm’s law states that the current through a conductor is directly proportional to the:
A) Power
B) Charge
C) Voltage
D) Resistance
Answer: C) Voltage -
An electric iron rated 1000 W is used for 2 hours. How much energy is consumed?
A) 2000 J
B) 2000 kJ
C) 2 kWh
D) 500 W
Answer: C) 2 kWh -
Which of the following is a source of direct current?
A) Transformer
B) Alternator
C) Dry cell
D) Induction coil
Answer: C) Dry cell -
A fuse is used in an electric circuit to:
A) Regulate voltage
B) Store charge
C) Prevent overheating
D) Convert energy
Answer: C) Prevent overheating -
The device used to store electrical charge is:
A) Transformer
B) Capacitor
C) Diode
D) Inductor
Answer: B) Capacitor -
Which of the following has the highest resistance?
A) Copper wire
B) Aluminium wire
C) Nichrome wire
D) Gold wire
Answer: C) Nichrome wire -
Magnetic materials include:
A) Copper
B) Plastic
C) Iron
D) Wood
Answer: C) Iron -
An electromagnet can be made by:
A) Rubbing iron with a magnet
B) Heating a magnet
C) Passing current through a coil wound around iron
D) Exposing iron to sunlight
Answer: C) Passing current through a coil wound around iron -
In a simple DC motor, the function of the split-ring commutator is to:
A) Convert current
B) Reverse direction of current
C) Reduce resistance
D) Store energy
Answer: B) Reverse direction of current -
Electric power is measured in:
A) Ohms
B) Volts
C) Watts
D) Coulombs
Answer: C) Watts
100 Current JAMB Past Questions and Answers on Physics for 2025/2026
81–100: Modern Physics, Electronics, and Nuclear Physics
-
The energy of a photon is given by:
A) E = mc²
B) E = hf
C) E = hv²
D) E = hf²
Answer: B) E = hf -
The unit of Planck’s constant is:
A) Js
B) W/m
C) Nm
D) Hz
Answer: A) Js -
The particle that carries a negative charge in an atom is the:
A) Neutron
B) Proton
C) Electron
D) Photon
Answer: C) Electron -
The nucleus of an atom is made up of:
A) Electrons and neutrons
B) Protons and neutrons
C) Electrons and protons
D) Neutrons only
Answer: B) Protons and neutrons -
Cathode rays are:
A) Streams of alpha particles
B) Streams of electrons
C) Waves of energy
D) Photons
Answer: B) Streams of electrons -
The half-life of a radioactive substance is:
A) Time taken for all atoms to decay
B) Time taken for half of the atoms to decay
C) Time taken for the substance to disappear
D) Time taken to produce alpha particles
Answer: B) Time taken for half of the atoms to decay -
Which of the following radiation is most penetrating?
A) Alpha
B) Beta
C) Gamma
D) Ultraviolet
Answer: C) Gamma -
What is the charge on an alpha particle?
A) +1
B) –1
C) +2
D) 0
Answer: C) +2 -
Which of the following devices converts AC to DC?
A) Transistor
B) Transformer
C) Rectifier
D) Capacitor
Answer: C) Rectifier -
A diode allows current to flow in:
A) One direction only
B) Both directions
C) No direction
D) Alternating directions
Answer: A) One direction only -
A transistor is used to:
A) Store electrical energy
B) Convert energy
C) Amplify signals
D) Stop current flow
Answer: C) Amplify signals -
The energy-mass relationship is expressed by:
A) E = mc²
B) E = hf
C) E = mv²
D) E = mc
Answer: A) E = mc² -
Which radiation is deflected the most in an electric field?
A) Alpha
B) Beta
C) Gamma
D) X-ray
Answer: B) Beta -
Which of the following is used in nuclear reactors as fuel?
A) Uranium-238
B) Hydrogen
C) Carbon
D) Oxygen
Answer: A) Uranium-238 -
The speed of light in vacuum is:
A) 2.0 × 10⁸ m/s
B) 3.0 × 10⁸ m/s
C) 2.5 × 10⁸ m/s
D) 1.5 × 10⁸ m/s
Answer: B) 3.0 × 10⁸ m/s -
An X-ray tube works by the collision of electrons with:
A) Protons
B) Glass
C) Metal target
D) Magnetic field
Answer: C) Metal target -
What happens in nuclear fission?
A) Two nuclei combine
B) An atom splits into smaller parts
C) Electrons jump orbitals
D) Neutrons become protons
Answer: B) An atom splits into smaller parts -
Which of the following emits radiation?
A) Stable isotopes
B) Radioactive isotopes
C) Neutral atoms
D) Inert gases
Answer: B) Radioactive isotopes -
An isotope of an element differs in:
A) Number of protons
B) Number of neutrons
C) Number of electrons
D) Atomic number
Answer: B) Number of neutrons -
The instrument used to detect ionizing radiation is the:
A) Hygrometer
B) Barometer
C) Geiger-Muller tube
D) Photometer
Answer: C) Geiger-Muller tube