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WAEC Physics Practice

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Question 1

What is the SI unit of length?

Measurement and errorsMeasurement and errorseasy

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Question 2

Which of the following quantities is a scalar?

Scalars and vectorsScalars and vectorseasy

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Question 3

A car moves with a constant velocity of 20 m/s. What is its acceleration?

Motion (1D and 2D)Motioneasy

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Question 4

If an object is thrown vertically upwards, what is the acceleration at the highest point?

Motion (1D and 2D)Motionmedium

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Question 5

Newton's First Law states that an object will remain at rest or in uniform motion unless acted upon by:

Forces and Newton's lawsForces and Newton's lawseasy

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Question 6

Work done is defined as:

Work, energy, powerWork, energy, powereasy

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Question 7

Which of the following is a vector quantity?

Scalars and vectorsScalars and vectorseasy

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Question 8

A body moves in a circle of radius 5 m at a constant speed of 10 m/s. What is the magnitude of its centripetal acceleration?

Circular motionCircular motionmedium

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Question 9

The time period of a simple pendulum depends on:

Simple harmonic motionSimple harmonic motionmedium

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Question 10

Which of the following is the correct unit of pressure?

Pressure and fluidsPressure and fluidseasy

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Question 11

Heat transfer by molecular collisions is called:

Temperature and heatTemperature and heateasy

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Question 12

Which wave characteristic does not change when light passes from air into glass?

Waves and oscillationsWaves and oscillationsmedium

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Question 13

The focal length of a concave mirror is 15 cm. Where will the image be formed if the object is placed 30 cm from the mirror?

OpticsOpticsmedium

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Question 14

Ohm's law states that the current through a conductor between two points is directly proportional to:

Electricity and magnetismElectricity and magnetismeasy

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Question 15

The half-life of a radioactive substance is:

Nuclear physicsNuclear physicseasy

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Question 16

Which particle determines the chemical properties of an atom?

Atomic physicsAtomic physicseasy

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Question 17

In projectile motion, the horizontal component of velocity:

Motion (1D and 2D)Motionmedium

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Question 18

The modulus of elasticity is a measure of:

ElasticityElasticitymedium

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Question 19

The principle of flotation states that a floating body displaces:

Pressure and fluidsPressure and fluidsmedium

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Question 20

Which law explains why a ship floats?

Pressure and fluidsPressure and fluidseasy

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Question 21

In a transverse wave, the particles of the medium vibrate:

Waves and oscillationsWaves and oscillationseasy

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Question 22

What is the function of the nucleus in an atom?

Atomic physicsAtomic physicseasy

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Question 23

The energy possessed by a body due to its motion is called:

Work, energy, powerWork, energy, powereasy

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Question 24

The resistance of a conductor increases with:

Electricity and magnetismElectricity and magnetismmedium

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Question 25

Which of the following correctly describes an isotope?

Atomic physicsAtomic physicsmedium

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Question 26

The principle of conservation of energy states that:

Work, energy, powerWork, energy, powermedium

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Question 27

In electrical circuits, what is the unit of electric current?

Electricity and magnetismElectricity and magnetismeasy

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Question 28

Which of the following is NOT a characteristic of simple harmonic motion?

Simple harmonic motionSimple harmonic motionmedium

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Question 29

Which of the following causes pressure to increase in a gas?

Pressure and fluidsPressure and fluidsmedium

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Question 30

When light passes from air into water, which statement is true?

LightLightmedium

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Question 31

The work done in moving a charge of 2 Coulombs through a potential difference of 5 Volts is:

Electricity and magnetismElectricity and magnetismeasy

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Question 32

The frequency of a wave is 50 Hz. What is its period?

Waves and oscillationsWaves and oscillationseasy

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Question 33

The image formed by a plane mirror is:

OpticsOpticseasy

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Question 34

The speed of sound in air is approximately:

Waves and oscillationsWaves and oscillationseasy

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Question 35

A body weighing 100 N is suspended in a fluid and experiences an upthrust of 30 N. What is its apparent weight?

Pressure and fluidsPressure and fluidsmedium

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Question 36

Which of the following best describes nuclear fusion?

Nuclear physicsNuclear physicsmedium

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Question 37

An object moves with a velocity of 5 m/s east and then changes to 5 m/s north. What is the magnitude of the change in velocity?

Scalars and vectorsScalars and vectorsmedium

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Question 38

The resistance of a wire is 10 Ω. If its length is doubled and diameter halved, what is the new resistance?

Electricity and magnetismElectricity and magnetismhard

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Question 39

A body of mass 4 kg is moving at 3 m/s. What is its kinetic energy?

Work, energy, powerWork, energy, powereasy

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Question 40

Which of the following is NOT a scalar quantity?

Scalars and vectorsScalars and vectorseasy

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Question 41

The acceleration of free fall near the Earth's surface is approximately:

Motion (1D and 2D)Motioneasy

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Question 42

The pressure exerted by a liquid column depends on:

Pressure and fluidsPressure and fluidseasy

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Question 43

The rate of doing work is called:

Work, energy, powerWork, energy, powereasy

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Question 44

The speed of light in vacuum is approximately:

LightLighteasy

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Question 45

Which of the following quantities has both magnitude and direction?

Scalars and vectorsScalars and vectorseasy

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Question 46

In the event of nuclear fission:

Nuclear physicsNuclear physicsmedium

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Question 47

The electric potential difference is measured in:

Electricity and magnetismElectricity and magnetismeasy

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Question 48

A body is thrown vertically upwards. The velocity at the highest point is:

Motion (1D and 2D)Motioneasy

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Question 49

In a wave, the distance between two successive crests is called:

Waves and oscillationsWaves and oscillationseasy

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Question 50

Which of the following materials is the best conductor of electricity?

Electricity and magnetismElectricity and magnetismeasy

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Question 51

What is the unit of frequency?

Waves and oscillationsWaves and oscillationseasy

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Question 52

The process of heat transfer by electromagnetic waves is called:

Temperature and heatTemperature and heateasy

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Question 53

The law of conservation of momentum states that:

Forces and Newton's lawsForces and Newton's lawsmedium

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Question 54

The unit of power is:

Work, energy, powerWork, energy, powereasy

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Question 55

Which color of visible light has the shortest wavelength?

LightLightmedium

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Question 56

Which of the following is NOT a fundamental force in nature?

Forces and Newton's lawsForces and Newton's lawsmedium

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Question 57

A pendulum completes 20 oscillations in 40 seconds. What is its frequency?

Simple harmonic motionSimple harmonic motioneasy

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Question 58

The temperature at which a substance changes from solid to liquid is called:

Thermal properties of matterThermal properties of mattereasy

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Question 59

Which of the following best describes an elastic collision?

Forces and Newton's lawsForces and Newton's lawsmedium

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Question 60

The unit of work done is:

Work, energy, powerWork, energy, powereasy

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Question 61

Which of the following is true about magnetic field lines?

Electricity and magnetismElectricity and magnetismmedium

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Question 62

Which of the following statements is true for thermal expansion?

Thermal properties of matterThermal properties of mattereasy

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Question 63

If the displacement of a wave doubles, what happens to its energy?

Waves and oscillationsWaves and oscillationsmedium

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Question 64

When a convex lens is used to form a real image, the image is:

OpticsOpticsmedium

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Question 65

The half-life of a radioactive isotope is 4 hours. How much of a 16 g sample remains after 12 hours?

Nuclear physicsNuclear physicsmedium

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Question 66

If the mass of an object is doubled while the force applied remains the same, its acceleration:

Forces and Newton's lawsForces and Newton's lawseasy

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Question 67

The elastic potential energy stored in a stretched spring is proportional to:

ElasticityElasticitymedium

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Question 68

The rate of flow of electric charge is called:

Electricity and magnetismElectricity and magnetismeasy

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Question 69

The force that opposes motion between two surfaces in contact is called:

Forces and Newton's lawsForces and Newton's lawseasy

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Question 70

The image formed by a concave mirror when the object is at the center of curvature is:

OpticsOpticsmedium

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Question 71

The temperature at which a liquid changes to a gas is called:

Thermal properties of matterThermal properties of mattereasy

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