Waec Physics 2016 Past Questions and Answers

Question 46:

• WAEC 2016

The phenomenon by which two light atomic nuclear combine to form a heavy nuclide with the release of energy is known as

A. Radioactivity
B. Nuclear fusion
C. Nuclear fission
D. Chain reaction

Question 47:

• WAEC 2016

In a p-type semiconductor, the

A. Number of holes are equal to the number of electrons
B. Electrical resistivity increases
C. Electrons are the majority charge carriers
D. Holes are the majority charge carriers

Question 48:

• WAEC 2016

Let \(\Delta\)x be the uncertainty in the measurements of position and \(\Delta\)p the uncertainty in measurement of momentum. The uncertainty principle relation is given as

A. \(\Delta\)x . \(\Delta\)p = h
B. \(\Delta\)x . \(\Delta\)p \(\leq\) = h
C. \(\Delta\)x . \(\Delta\)p \(\geq\) = h
D. \(\Delta\)x . \(\Delta\)p > h

Question 49:

• WAEC 2016

State the dimension of; (a) impulse; (ii) acceleration; (iii) work

Question 50:

• WAEC 2016

A projectile is fired with a velocity of 20 ms\(^{-1}\) at an angle of 40° to the horizontal. Determine the components of the velocity of the projectile at its maximum height.