Waec Physics Past Questions For Year 1989
Question 1
A boy pulls a nail from the wall with a string tied to the nail. The string is inclined at an angle of 60o to the wall. If the tension in the string is 4N, what is the effective force used in pulling the nail?
- A. 2√3 N
- B. 4 N
- C. 4√3 N
- D. 8 N
- E. 2 N
Question 2
Which of the following is not a consequence of a force field?
- A. wieght
- B. surface tension
- C. gravitational pull
- D. magnetic force
- E. electric force
Question 3
Which of the following is NOT a vector quantity?
- A. momentum
- B. force
- C. velocity
- D. temperature
- E. displacement
Question 4
The motion of the prongs of the sounding tuning fork is
- A. random
- B. translational
- C. rotational
- D. vibratory
- E. vibratory and rotational
Question 5
A stone tied to a string is made to revolve in a horizontal circle of radius 4m with an angular speed of 2 rad per sec. With what tangential velocity will the stone move off the circle if the string is cut?
- A. 16.0 ms-1
- B. 8.0 ms-1
- C. 6.0 ms-1
- D. 2.0 ms-1
- E. 0.5 ms-1
