Physics Waec Practical Questions and Answers

Here are 20 WAEC Physics practical questions along with options and answers:

 

Question:

A student sets up a simple pendulum experiment. If the length of the pendulum is increased, what effect does it have on the period of oscillation?

 

a) Increases

b) Decreases

c) Remains constant

d) Varies unpredictably

 

Answer: b) Decreases

 

Question:

In an experiment to determine the focal length of a concave mirror, if the object distance is doubled, what happens to the image distance?

 

a) Doubles

b) Halves

c) Remains the same

d) Quadruples

 

Answer: c) Remains the same

 

Question:

When a block of wood floats in water, what principle is being demonstrated?

 

a) Archimedes’ Principle

b) Boyle’s Law

c) Pascal’s Law

d) Newton’s Third Law

 

Answer: a) Archimedes’ Principle

 

Question:

An experiment involves measuring the resistance of a wire at different lengths. If the length of the wire is increased, what happens to its resistance?

 

a) Increases

b) Decreases

c) Remains constant

d) Varies unpredictably

 

Answer: a) Increases

 

Question:

When white light passes through a prism, what phenomenon occurs?

 

a) Reflection

b) Refraction

c) Dispersion

d) Diffraction

 

Answer: c) Dispersion

 

Question:

What is the purpose of using a Vernier caliper in a physics laboratory?

 

a) Measuring time

b) Measuring mass

c) Measuring length

d) Measuring temperature

 

Answer: c) Measuring length

 

Question:

In a circuit with resistors in series, how does the total resistance compare to the individual resistances?

 

a) Equal to the sum

b) Less than the sum

c) Greater than the sum

d) Unpredictable

 

Answer: a) Equal to the sum

 

Question:

Which of the following is a vector quantity?

 

a) Speed

b) Distance

c) Time

d) Force

 

Answer: d) Force

 

Question:

What type of lens converges light rays to a single point?

 

a) Concave

b) Convex

c) Plano-concave

d) Plano-convex

 

Answer: b) Convex

 

Question:

In a thermodynamics experiment, if the pressure of a gas is kept constant while the temperature increases, what happens to the volume?

 

a) Increases

b) Decreases

c) Remains constant

d) Varies unpredictably

 

Answer: a) Increases

 

Question:

What is the SI unit of electric current?

 

a) Ampere

b) Volt

c) Ohm

d) Watt

 

Answer: a) Ampere

 

Question:

A student measures the angle of incidence and angle of reflection for light rays reflecting off a mirror. What law is being verified?

 

a) Law of Reflection

b) Snell’s Law

c) Coulomb’s Law

d) Ohm’s Law

 

Answer: a) Law of Reflection

 

Question:

What is the function of an oscilloscope in an electronics experiment?

 

a) Measure resistance

b) Measure voltage

c) Measure frequency

d) Measure mass

 

Answer: b) Measure voltage

 

Question:

If an object is placed at the focal point of a convex lens, what type of image is formed?

 

a) Real and inverted

b) Real and upright

c) Virtual and inverted

d) Virtual and upright

 

Answer: c) Virtual and inverted

 

Question:

What is the unit of power in the International System of Units (SI)?

 

a) Watt

b) Joule

c) Newton

d) Volt

 

Answer: a) Watt

 

Question:

A student measures the acceleration due to gravity using a simple pendulum. What factor is crucial for an accurate measurement?

 

a) Mass of the pendulum bob

b) Length of the pendulum

c) Material of the pendulum string

d) Color of the pendulum

 

Answer: b) Length of the pendulum

 

Question:

In a circuit with capacitors in parallel, how does the total capacitance compare to the individual capacitances?

 

a) Equal to the sum

b) Less than the sum

c) Greater than the sum

d) Unpredictable

 

Answer: c) Greater than the sum

 

Question:

What is the SI unit of magnetic flux?

 

a) Weber

b) Tesla

c) Gauss

d) Ohm

 

Answer: a) Weber

 

Question:

When a current-carrying conductor is placed in a magnetic field, what force is exerted on the conductor?

 

a) Gravitational force

b) Magnetic force

c) Electrostatic force

d) Nuclear force

 

Answer: b) Magnetic force

 

Question:

What property of a material is determined by the Young’s Modulus?

 

 

a) Density

b) Elasticity

c) Hardness

d) Conductivity

 

Answer: b) Elasticity