Waec Physics 1996 Past Questions and Answers

Question 56:

• WAEC 1996

What is the decay constant of a radioactive element whose half-life is 3 seconds

A. 0.132s^-1
B. 0.23s^-1
C. 0.347s^-1
D. 0.693s^-1
E. 0.924s^-1

Question 57:

• WAEC 1996

Which of the following substances is most viscous at room temperature?

A. Water
B. Alcohol
C. Petrol
D. Palm oil
E. Kerosine

Question 58:

• WAEC 1996

Which of the following is not part of the electromagnetic spectrum?

A. Radio wave
B. Gamma ray
C. Infra-red ray
D. Alpha particle
E. X-ray.

Question 59:

• WAEC 1996

Which of the following is used in a nuclear reactor to slow down fast-moving neutrons?

A. Carbondioxide gas
B. Liquid sodium metal
C. Concrete shield
D. Graphite rods
E. Boron rods

Question 60:

• WAEC 1996

Which of the following is used in a nuclear reactor to slow down fast-moving neutrons?

A. Carbondioxide gas
B. Liquid sodium metal
C. Concrete shield
D. Graphite rods
E. Boron rods