Physics Neco Practical Questions and Answers

Here they are;

Question:

In an experiment to determine the speed of sound, if the distance between the source and the detector is increased, what happens to the time it takes for the sound waves to travel?

 

a) Increases

b) Decreases

c) Remains constant

d) Varies unpredictably

 

Answer: a) Increases

 

Question:

What type of mirror is commonly used in a rearview car mirror?

 

a) Concave

b) Convex

c) Plano-concave

d) Plano-convex

 

Answer: b) Convex

 

Question:

A student investigates the effect of temperature on the resistance of a metallic conductor. What is the expected trend?

 

a) Increases

b) Decreases

c) Remains constant

d) Varies unpredictably

 

Answer: a) Increases

 

Question:

When a force is applied to a body and the body moves in the direction of the force, what work is being done?

 

a) Positive work

b) Negative work

c) No work done

d) Unpredictable work

 

Answer: a) Positive work

 

Question:

In an optics experiment, if the object is placed beyond 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: b) Real and upright

 

Question:

When a wire carrying an electric current is placed in a magnetic field, what force is exerted on the wire?

 

a) Gravitational force

b) Magnetic force

c) Electrostatic force

d) Nuclear force

 

Answer: b) Magnetic force

 

Question:

What is the purpose of a fuse in an electrical circuit?

 

a) Regulate voltage

b) Control current

c) Prevent short circuits

d) Increase resistance

 

Answer: c) Prevent short circuits

 

Question:

A student investigates the effect of mass on the acceleration of an object under the influence of gravity. What is the relationship between mass and acceleration?

 

a) Directly proportional

b) Inversely proportional

c) No relationship

d) Varied relationship

 

Answer: c) No relationship

 

Question:

When a glass rod is rubbed with silk, it becomes positively charged. What principle explains this phenomenon?

 

a) Law of Conservation of Charge

b) Coulomb’s Law

c) Ohm’s Law

d) Law of Reflection

 

Answer: a) Law of Conservation of Charge

 

Question:

What is the SI unit of frequency?

 

a) Hertz

b) Joule

c) Newton

d) Watt

 

Answer: a) Hertz

 

Question:

A student measures the potential difference across a resistor and the current passing through it. What law is being used to calculate the resistance?

 

a) Ohm’s Law

b) Coulomb’s Law

c) Newton’s Law

d) Pascal’s Law

 

Answer: a) Ohm’s Law

 

Question:

What is the function of a transformer in an electrical circuit?

 

a) Increase current

b) Decrease voltage

c) Increase voltage

d) Decrease current

 

Answer: c) Increase voltage

 

Question:

When a ball is thrown vertically upward, what is the acceleration at the highest point?

 

a) 9.8 m/s²

b) 0 m/s²

c) -9.8 m/s²

d) Variable acceleration

 

Answer: c) -9.8 m/s²

 

Question:

What happens to the pitch of a sound wave if the frequency increases?

 

a) Pitch increases

b) Pitch decreases

c) No change in pitch

d) Varied effect on pitch

 

Answer: a) Pitch increases

 

Question:

A student measures the temperature of a gas at different volumes. If the volume is halved, what happens to the temperature?

 

a) Increases

b) Decreases

c) Remains constant

d) Varies unpredictably

 

Answer: a) Increases

 

Question:

In a magnetic field, what is the direction of the force experienced by a current-carrying conductor?

 

a) Parallel to the field

b) Perpendicular to the field

c) Opposite to the field

d) Varied directions

 

Answer: b) Perpendicular to the field

 

Question:

What is the principle behind a barometer, used to measure atmospheric pressure?

 

a) Pascal’s Law

b) Boyle’s Law

c) Archimedes’ Principle

d) Bernoulli’s Principle

 

Answer: a) Pascal’s Law

 

Question:

A student investigates the effect of a force on the motion of an object. If the force is doubled, what happens to the acceleration?

 

a) Doubles

b) Halves

c) Remains constant

d) Quadruples

 

Answer: c) Remains constant

 

Question:

When light passes from air into water, what phenomenon occurs?

 

a) Reflection

b) Refraction

c) Dispersion

d) Diffraction

 

Answer: b) Refraction

 

Question:

What is the SI unit of torque or moment of force?

 

a) Newton-meter

b) Joule

c) Watt

d) Ohm

 

Answer: a) Newton-meter