JAMB Physics Past Questions and Answers

 

Physics questions with options and answers:

 

Question: What is the SI unit of force?

 

A. Newton (N)

B. Watt (W)

C. Joule (J)

D. Volt (V)

Answer: A. Newton (N)

 

Question: According to Newton’s first law of motion, an object at rest tends to:

 

A. Accelerate

B. Decelerate

C. Remain at rest

D. Move in a circular path

Answer: C. Remain at rest

 

Question: What is the relationship between force, mass, and acceleration according to Newton’s second law?

 

A. Force = Mass × Acceleration

B. Force = Mass / Acceleration

C. Force = Acceleration / Mass

D. Force = Mass + Acceleration

Answer: A. Force = Mass × Acceleration

 

Question: In optics, what type of lens converges light rays to a single point?

 

A. Concave lens

B. Convex lens

C. Diverging lens

D. Plano-concave lens

Answer: B. Convex lens

 

Question: What is the unit of electrical resistance?

 

A. Ohm (Ω)

B. Volt (V)

C. Ampere (A)

D. Watt (W)

Answer: A. Ohm (Ω)

 

Question: According to the law of conservation of energy, energy cannot be:

 

A. Created

B. Destroyed

C. Transferred

D. Measured

Answer: B. Destroyed

 

Question: Which of the following is a scalar quantity?

 

A. Velocity

B. Acceleration

C. Distance

D. Force

Answer: C. Distance

 

Question: What is the speed of light in a vacuum?

 

A. 300,000 km/s

B. 150,000 m/s

C. 3,000,000 m/s

D. 300,000,000 m/s

Answer: D. 300,000,000 m/s

 

Question: What law states that the pressure of a gas is inversely proportional to its volume at constant temperature?

 

A. Boyle’s law

B. Charles’s law

C. Pascal’s law

D. Archimedes’ principle

Answer: A. Boyle’s law

 

Question: What is the main factor affecting the pitch of a sound wave?

 

A. Amplitude

B. Frequency

C. Wavelength

D. Speed

Answer: B. Frequency

 

Question: What is the formula for gravitational potential energy?

 

A. PE = mgh

B. PE = 1/2mv²

C. PE = Fd

D. PE = QV

Answer: A. PE = mgh

 

Question: In electromagnetic waves, which color has the shortest wavelength?

 

A. Red

B. Blue

C. Green

D. Yellow

Answer: B. Blue

 

Question: What is the law of reflection?

 

A. The angle of incidence equals the angle of refraction

B. The angle of incidence is half the angle of reflection

C. The incident ray, reflected ray, and normal all lie in the same plane

D. The angle of incidence is greater than the angle of reflection

Answer: C. The incident ray, reflected ray, and normal all lie in the same plane

 

Question: Which of the following is a unit of power?

 

A. Newton (N)

B. Joule (J)

C. Watt (W)

D. Volt (V)

Answer: C. Watt (W)

 

Question: What is the principle behind a transformer’s operation?

 

A. Pascal’s principle

B. Archimedes’ principle

C. Faraday’s law of electromagnetic induction

D. Hooke’s law

Answer: C. Faraday’s law of electromagnetic induction

 

Question: What is the SI unit of magnetic flux?

 

A. Weber (Wb)

B. Tesla (T)

C. Gauss (G)

D. Henry (H)

Answer: A. Weber (Wb)

 

Question: According to the law of conservation of momentum, the total momentum of an isolated system is:

 

A. Increasing

B. Decreasing

C. Constant

D. Zero

Answer: C. Constant

 

Question: What type of energy does an object possess due to its motion?

 

A. Potential energy

B. Mechanical energy

C. Kinetic energy

D. Thermal energy

Answer: C. Kinetic energy

 

Question: Which of the following is a vector quantity?

 

A. Speed

B. Distance

C. Mass

D. Velocity

Answer: D. Velocity

 

Question: What is the unit of electric charge?

 

A. Ampere-hour (Ah)

B. Coulomb (C)

C. Ohm (Ω)

D. Farad (F)

Answer: B. Coulomb (C)

 

Question: What does the law of inertia state?

 

A. An object at rest will stay at rest, and an object in motion will stay in motion with constant speed and in the same direction unless acted upon by a net external force.

B. The acceleration of an object is directly proportional to the net force acting upon the object and inversely proportional to the object’s mass.

C. For every action, there is an equal and opposite reaction.

D. The pressure applied to a confined fluid is transmitted undiminished to all portions of the fluid and to the walls of its container.

Answer: A. An object at rest will stay at rest, and an object in motion will stay in motion with constant speed and in the same direction unless acted upon by a net external force.

 

Question: What phenomenon occurs when a wave encounters a barrier and bends around it?

 

A. Reflection

B. Refraction

C. Diffraction

D. Interference

Answer: C. Diffraction.