Waec Physics Past Questions and Answers

Question 26:

• WAEC 1988

Which of the following correctly gives the relationship between linear speed V and angular speed ω of a body moving uniformly in a circle of radius r?

A. V = ωr
B. V = ω²r
C. V = ωr²
D. V² = ωr
E. V = ω/r

Question 27:

• WAEC 1988

The motion of a body is simple harmonic if the

A. Acceleration is always directed towards a fixed point
B. Path of motion is a striaght line
C. Acceleration is directed towards a fixed point and proportional to its distance from the point
D. Acceleration is proportional to the square of the distance from a fixed point
E. Acceleration is constant and directed towards a fixed point

Question 28:

• WAEC 1988

Which of the following statements about the gaseous state of matter is not correct? The molecules of a substance is in gaseous state

A. Are in constant state of motion
B. Have different speed
C. Have a temperature which is an average measure of the kinetic energy
D. Have no intermolecular attractive force
E. Have a pressure which is determined by the number of molecules present

Question 29:

• WAEC 1988

Which of the following cannot be used to measure the temperature of a substance?

A. Variation of pressure with temperature
B. Expansivity of a liquid
C. Change in resistance of a conductor
D. Thermometric effect
E. Change in color with temperature

Question 30:

• WAEC 1988

The clinical thermometer is characterized by having a

A. Wide range of temperature
B. Wide bore
C. Long stem
D. Constriction
E. Narrow bore