# 1995 - WAEC Physics Past Questions and Answers - page 1

1
Which of the following is a fundamental quantity?
A
Heat capacity
B
Electric current
C
Torque
D
Reactance
correct option: b
2
A boy cycles continuously through a distance of 1.0 km in 5 minutes. Calculate his average speed
A
0.3ms-1
B
3.3ms-1
C
16.6ms-1
D
20.0ms-1
correct option: b
3
A student found out from a simple pendulum experiment that 20 oscillations were completed in 38 seconds. What is the period of oscillation of the pendulum?
A
8.0s
B
3.8 s
C
2.0 s
D
1.9 s
correct option: d
4
A body of mass 7.5 kg is to be pulled up along a plane which is inclined at 30o to the horizontal. If the efficiency of the plane is 75%, what is the minimum force required to pull the body up the plane?
(g = 10ms-1)
A
5.0 N
B
20.0 N
C
50.0 N
D
75.0 N
correct option: c
5
The angular speed of an object describing a circle of radius 4m with a linear constant speed of 10 ms-1 is
A
B
C
D
correct option: c
6
At what angle to the horizontal must the nozzle of a machine gun be kept when firing to obtain a maximum horizontal range for the bullets?
A
0.0o
B
22.5o
C
30.0o
D
45. 0o
correct option: d
7
Which of the following will reduce the frequency of oscillation of a simple pendulum?
A
Increasing the mass of the bob
B
Decreasing the mass of the bob
C
Increasing the length of the string
D
Decreasing the length of the string
correct option: c
8
A car travelling at a uniform speed of 120km h-1 passes two stations in 4 minutes. Calculate the distance between the two stations.
A
8km
B
15km
C
22km
D
30km
correct option: a
9
A machine has an efficiency of 60%. If the machine is required to overcome a load of 30 N with a force of 20 N calculate its mechanical advantage?
A
0.7
B
0.9
C
1.5
D
2.5
correct option: c