Waec Physics 2010 Past Questions and Answers

Question 11:

• WAEC 2010

Which of the following statements best describes a rigid body? A body which

A. Is not equally deformed
B. When deformed regains it shape
C. Is brittle
D. When deformed remains deformed

Question 12:

• WAEC 2010

simple harmonic oscillator has a period of 0.02s and amplitude of 0.25m. Calculate the speed in ms^-1 at the centre of the oscillation

A. 125\(\pi\)
B. 25.00\(\pi\)
C. 100.00 \(\pi\)
D. 400.00\(\pi\)

Question 13:

• WAEC 2010

A vertical string, suspended from a fixed point and having a small mass attached to the free end is set into oscillations. Which of the following statements about the system are correct? i. The potential energy of the mass is a minimum at the middle of the swing ii. Its kinetic energy is a maximum at the middle of the swing iii. The sum of the potential and kinetic energies is constant throughout the swing

A. I,ii and iii
B. I and ii only
C. Ii and iii only
D. I and iii only

Question 14:

• WAEC 2010

A moving body of mass 25.0kg undergoes a uniform retardation of 20.0ms^-2. Calculate the magnitude of the retardating force

A. 1.25N
B. 8.00N
C. 45.00N
D. 500.00N

Question 15:

• WAEC 2010

Which of the following sources of energy is/are exhausible? i. Solar ii. Fossil fuels iii. Tidal power

A. I, ii and iii
B. I and ii only
C. I and iii only
D. Ii and iii only