Waec Physics 1988 Past Questions and Answers

Question 11:

• 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 12:

• 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 13:

• 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 14:

• 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

Question 15:

• WAEC 1988

A given mass of gas has a pressure of 80Nm^-2 at a temperature of 47^oC. If the temperature is reduced to 27^oC with the volume remaining constant, the new pressure is

A. 46.0 Nm^-2
B. 75.0 Nm^-2
C. 80.0 Nm^-2
D. 85.3 Nm^-2
E. 139.4 Nm^-2