Physics Waec Past Questions And Answers (Objective and Theory)

Here are 20 physics WAEC questions, including a theory section with 5 questions. Each question has multiple-choice options, and the correct answer is indicated.

 

Multiple Choice Section:

Question 1:

What is the SI unit of force?

 

A) Newton (N)

B) Watt (W)

C) Joule (J)

D) Pascal (Pa)

Answer: A) Newton (N)

Question 2:

Which of the following is a vector quantity?

 

A) Speed

B) Mass

C) Distance

D) Velocity

Answer: D) Velocity

Question 3:

In a concave mirror, when an object is placed between F (focus) and C (center of curvature), the image formed is:

 

A) Real, inverted, and magnified

B) Real, upright, and magnified

C) Virtual, inverted, and diminished

D) Virtual, upright, and magnified

Answer: A) Real, inverted, and magnified

Question 4:

What is the relationship between current (I), voltage (V), and resistance (R) in an electrical circuit?

 

A) I = V/R

B) I = R/V

C) V = IR

D) R = IV

Answer: C) V = IR

Question 5:

When a body is moving with constant speed in a circular path, the acceleration is directed:

 

A) Towards the center of the circle

B) Away from the center of the circle

C) Tangentially to the circle

D) Radially outward

Answer: A) Towards the center of the circle

Question 6:

The phenomenon of total internal reflection occurs when light travels from:

 

A) Air to glass

B) Water to air

C) Glass to air

D) Diamond to air

Answer: D) Diamond to air

Question 7:

Which of the following is a unit of power?

 

A) Volt (V)

B) Ampere (A)

C) Watt (W)

D) Ohm (Ω)

Answer: C) Watt (W)

Question 8:

The process of a substance changing directly from a solid to a gas is known as:

 

A) Sublimation

B) Fusion

C) Condensation

D) Vaporization

Answer: A) Sublimation

Question 9:

In nuclear reactions, the mass defect is converted into:

 

A) Heat energy

B) Light energy

C) Kinetic energy

D) Potential energy

Answer: B) Light energy

Question 10:

The principle of conservation of energy states that:

 

A) Energy cannot be created or destroyed

B) Energy always increases in a system

C) Energy is only conserved in mechanical systems

D) Energy is inversely proportional to mass

Answer: A) Energy cannot be created or destroyed

Theory Section:

Theory Question 1:

Explain the concept of Newton’s laws of motion, and provide examples for each law.

 

Theory Question 2:

Discuss the properties of electromagnetic waves and their significance in communication systems.

 

Theory Question 3:

Define and explain the term “refraction of light.” Provide examples and discuss its applications.

 

Theory Question 4:

Elaborate on the principles of electric circuits, including series and parallel connections. Provide relevant formulas.

 

Theory Question 5:

Describe the process of nuclear fission, highlighting its applications and potential risks.