Physics WAEC Past Questions

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Which of the following is not an electromagnetic radiation?

A. X-ray
B. Radio waves
C. Sunlight
D. Sound waves
E. Infra-red radiation

View Answer & Discuss WAEC 1988

Two radioactive elements A and B have half-lives of 100 and 50 years respectively. Samples of A and B initially contain equal amounts/number of atoms. What is the ratio of the number of the remaining atoms of A to that of B after 200 years?

A. 4 : 1
B. 2 : 1
C. 1 : 1
D. 1 : 2
E. 1 : 4

View Answer & Discuss (5) WAEC 1988

Which of the following is NOT a vector quantity?

A. momentum
B. force
C. velocity
D. temperature
E. displacement

View Answer & Discuss (3) WAEC 1989

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

View Answer & Discuss WAEC 1989

A boy pulls a nail from the wall with a string tied to the nail. The string is inclined at an angle of 60^o 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

View Answer & Discuss (3) WAEC 1989

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