Waec Physics 2003 Past Questions and Answers

Question 46:

• WAEC 2003

The diagram above shows the resultant electric field pattern due to two electric point charges P and S. Which of the following statements is correct?

A. P is negatively charged while S is positively charged
B. P is positively charged while S is negatively charged
C. Both P and S are positively charge
D. Both P and Q are negatively charged

Question 47:

• WAEC 2003

The bar magnet illustrated in the diagram above picks up an unmagnetised steel nail X. In turn, X picks up a similar nail Y and so on. The nail are said to be magnetised by

A. Conduction
B. Single touch
C. Induction
D. Divided touch

Question 48:

• WAEC 2003

(a) State two objects each used in sports and warfare which may be considered as projectiles.
(b) the horizontal range R, of a projectile is given by the expression;
R = \(\frac{u^2 sin 2\theta}{g}\) where \(\theta\) is the angle of projection, g the acceleration of free fall due to gravity and u the initial velocity. At what value of \(\theta\) will R be maximium?

Question 49:

• WAEC 2003

(a) What is surface tension?
(b) State two methods by which the surface tension of a liquid can be reduced.

Question 50:

• WAEC 2003

(a) Explain diffusion
(b) State one factor that can affect the rate of diffusion.