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150 Likely JAMB Physics Questions & Answers – 2026

Mechanics (1–30)

The SI unit of force is:
A. Joule B. Newton C. Pascal D. Watt
Answer: B. Newton
Mass × Acceleration gives:
A. Work B. Power C. Force D. Energy
Answer: C. Force
The acceleration due to gravity on Earth is approximately:
A. 9.8 m/s² B. 10 m/s² C. 8.9 m/s² D. 9 m/s²
Answer: A. 9.8 m/s²
The equation F = ma is:
A. Newton’s First Law B. Second Law C. Third Law D. Law of Gravitation
Answer: B. Second Law ✔ Recommended for you

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CHEMISTRY Hot Topics KEY POINT

Work is defined as:
A. F × t B. F × s × cosθ C. m × a D. P × t
Answer: B. F × s × cosθ
Power =
A. Work ÷ Time B. Force × Distance C. Mass × Acceleration D. Energy × Time
Answer: A. Work ÷ Time
Kinetic energy of a moving body =
A. ½ mv² B. mgh C. mv D. F × s
Answer: A. ½ mv²
Potential energy =
A. ½ mv² B. mgh C. mg D. F × s
Answer: B. mgh
Momentum =
A. Mass × Acceleration B. Mass × Velocity C. Force × Time D. Velocity ÷ Mass
Answer: B. Mass × Velocity
Impulse =
A. Force ÷ Time B. Mass × Acceleration C. Change in Momentum D. Velocity ÷ Mass
Answer: C. Change in Momentum
The centripetal force on a body in circular motion acts:
A. Tangent to circle B. Towards center C. Away from center D. Perpendicular to motion
Answer: B. Towards center
Torque =
A. Force × Distance B. Mass × Acceleration C. Force × Lever Arm D. Work ÷ Distance
Answer: C. Force × Lever Arm
The period of a simple pendulum depends on:
A. Mass of bob B. Length C. Amplitude D. Density
Answer: B. Length
The period of a simple pendulum T =
A. 2π√(L/g) B. 2π√(g/L) C. √(2πL/g) D. g/2πL
Answer: A. 2π√(L/g)
The range of a projectile depends on:
A. Mass only B. Angle only C. Initial velocity & angle D. Gravity only
Answer: C. Initial velocity & angle
Work done =
A. Force × Displacement × cosθ B. Force × Time C. Mass × Gravity D. Velocity × Mass
Answer: A. Force × Displacement × cosθ
A body moving at uniform speed on a smooth surface has:
A. Acceleration B. Zero acceleration C. Increasing velocity D. Variable momentum
Answer: B. Zero acceleration
Weight =
A. Mass × Velocity B. Mass × Gravity C. Force ÷ Area D. Mass ÷ Acceleration
Answer: B. Mass × Gravity
Density =
A. Mass × Volume B. Mass ÷ Volume C. Volume ÷ Mass D. Mass × Acceleration
Answer: B. Mass ÷ Volume
Archimedes’ principle states:
A. Upthrust = Weight of displaced fluid B. Pressure = Force ÷ Area C. F = ma D. Energy conserved
Answer: A. Upthrust = Weight of displaced fluid
A body floats because:
A. Its density > fluid B. Its density < fluid C. Its mass > fluid D. Its weight > fluid
Answer: B. Its density < fluid
Viscosity is:
A. Resistance to flow B. Force per unit area C. Pressure D. Density × Gravity
Answer: A. Resistance to flow
Escape velocity =
A. √(2GM/R) B. √(GM/2R) C. 2GM/R D. √(R/2GM)
Answer: A. √(2GM/R)
Work done by centripetal force =
A. Zero B. Maximum C. Equal to kinetic energy D. Equal to potential energy
Answer: A. Zero
Linear momentum is conserved when:
A. No net external force B. Force applied C. Acceleration occurs D. Mass decreases
Answer: A. No net external force
Impulse =
A. Change in momentum B. Force ÷ Time C. Mass × Acceleration D. Velocity × Mass
Answer: A. Change in momentum
Friction always:
A. Accelerates B. Opposes motion C. Creates energy D. Does nothing
Answer: B. Opposes motion
Sliding friction < Limiting friction. True or False?
Answer: True
Inertia is:
A. Force B. Resistance to motion change C. Energy D. Momentum
Answer: B. Resistance to motion change
For uniform circular motion, acceleration =
A. v²/r B. r/v² C. ½ mv² D. mgh
Answer: A. v²/r

Thermodynamics (31–50)

The SI unit of temperature is:
A. Celsius B. Fahrenheit C. Kelvin D. Joule
Answer: C. Kelvin
Heat is:
A. Temperature B. Energy in transit due to temperature difference C. Work D. Force × Distance
Answer: B. Energy in transit due to temperature difference
Specific heat capacity =
A. Heat ÷ Mass B. Heat ÷ (Mass × ΔT) C. Force ÷ Area D. Work ÷ Time
Answer: B. Heat ÷ (Mass × ΔT)
Latent heat is:
A. Energy to raise temperature B. Energy to change state without temperature change C. Kinetic energy D. Potential energy
Answer: B. Energy to change state without temperature change
First law of thermodynamics =
A. Energy cannot be created or destroyed B. Heat flows from hot to cold C. Entropy increases D. Pressure constant
Answer: A. Energy cannot be created or destroyed
Ideal gas equation:
A. PV = nRT B. PV = n²RT C. P/V = nRT D. PV = mgh
Answer: A. PV = nRT
Boyle’s Law:
A. V/T = constant B. P₁V₁ = P₂V₂ at constant T C. P/T = constant D. PV = nRT
Answer: B. P₁V₁ = P₂V₂ at constant T
Charles’ Law:
A. V/T = constant at constant P B. P₁V₁ = P₂V₂ C. PV = nRT D. P/T = constant
Answer: A. V/T = constant at constant P
Gay-Lussac’s Law:
A. P/T = constant at constant V B. V/T = constant C. PV = nRT D. P₁V₁ = P₂V₂
Answer: A. P/T = constant at constant V
Combined gas law =
A. P₁V₁/T₁ = P₂V₂/T₂ B. PV = nRT C. P/T = constant D. V/T = constant
Answer: A. P₁V₁/T₁ = P₂V₂/T₂
Pressure =
A. Force ÷ Mass B. Force ÷ Area C. Mass × Gravity D. Work ÷ Distance
Answer: B. Force ÷ Area
Heat transfer by conduction occurs in:
A. Solids B. Liquids only C. Vacuum D. Gases only
Answer: A. Solids
Heat transfer by convection occurs in:
A. Solids B. Fluids C. Vacuum D. Metals only
Answer: B. Fluids
Heat transfer by radiation occurs in:
A. Solids only B. Vacuum C. Liquids only D. Metals only
Answer: B. Vacuum
Absolute zero =
A. -100°C B. 0°C C. -273°C D. 100°C
Answer: C. -273°C
Specific latent heat of fusion =
A. Energy to melt 1kg of substance B. Energy to boil 1kg C. Energy to heat 1kg D. Energy to cool 1kg
Answer: A. Energy to melt 1kg of substance
Specific latent heat of vaporization =
A. Energy to vaporize 1kg B. Energy to heat 1kg C. Energy to melt 1kg D. Energy to cool 1kg
Answer: A. Energy to vaporize 1kg
Thermal expansion of solids:
A. ΔL = αLΔT B. ΔL = L/αΔT C. ΔL = α/ LΔT D. ΔL = αL/T
Answer: A. ΔL = αLΔT
Pascal’s principle:
A. Pressure applied to confined fluid is transmitted equally B. Force = Mass × Acceleration C. Energy cannot be created D. PV = nRT
Answer: A. Pressure applied to confined fluid is transmitted equally
Archimedes’ principle applies to:
A. Floating bodies B. Solids only C. Gases only D. Vacuum
Answer: A. Floating bodies