Waec Physics 2020 Past Questions and Answers

Question 1:

• WAEC 2020

In collision between two objects, kinetic energy is conserved only if

A. One of the objects was initially at rest
B. Potential energy is converted to work
C. The collision is inelastic
D. The collision is elastic

Question 2:

• WAEC 2020

The quantity of motion of a body is its

A. Acceleration
B. Displacement
C. Mometum
D. Velocity

Question 3:

• WAEC 2020

The volume of a fixed mass of a gas varies inversely as the pressure on it provided the temperature is constant. This statement is

A. Pressure law
B. Charles law
C. Boyle's law
D. General gas law

Question 4:

• WAEC 2020

An image formed on a screen is always

A. Inverted
B. Magnified
C. Upright
D. Virtual

Question 5:

• WAEC 2020

How would the capacitance of a parallel plate capacitor be affected if the distance of separation of its plates is decreased? It will

A. Increase in value
B. Decrease slightly
C. Remain unchanged
D. Drop to zero