Waec Physics 1995 Past Questions and Answers

Question 56:

• WAEC 1995

Which of the following is not a product of nuclear fission?

A. Alpha particle
B. Beta particle
C. Gamma ray
D. X-ray
E. Neutron

Question 57:

• WAEC 1995

Which of the following cannot be explained by the molecular theory of matter?

A. Conduction
B. Radiation
C. Convection
D. Evaporation
E. Expansion

Question 58:

• WAEC 1995

Which of the following is used for shielding radioactive fall-outs?

A. Plastic
B. Wood
C. Textile
D. Aluminium
E. Lead

Question 59:

• WAEC 1995

(a) Explain what is meant by acceleration of free fall due to gravity, g.
(b) State two reasons why g varies on the surface of the earth
(c) A stone is projected upwards at an angle of 30° to the horizontal from the top of a tower of height 100 m and it hits the ground at a point Q. If the initial velocity of projection is 100ms\(^{-1}\), calculate the
(i) maximum height of the stone above the ground;
(ii) time it takes to reach this height;
(iii) time of flight
(iv) horizontal distance from the foot of the tower to the point Q. (Neglect air resistance and take g as 10m\(^{-2}\))

Question 60:

• WAEC 1995

(a) State Faraday's law of electromagnetic induction.
(b) Draw a labelled diagram of an induction coil and explain how it works.
(c) How is the effect of eddy currents minimized in the coil?
(d) State two reasons why a capacitor should be included in the primary circuit of the coil.
(e) State three uses of an induction coil.