Waec Physics 2004 Past Questions and Answers

Question 6:

• WAEC 2004

The diagram above represent displacement D, versus time, t graph of a progressive wave. Deduce the frequency of the wave

A. 20 Hz
B. 10 Hz
C. 5 Hz
D. 4 Hz

Question 7:

• WAEC 2004

Which of the following concept is not an evidence of the particle nature of matter?

A. Diffusion
B. Brownian motion
C. Diffraction
D. Crystallization

Question 8:

• WAEC 2004

A diver is 5.2m below the surface of water of density 1000Kgm^-3. If the atmospheric pressure is 1.02 x 10⁵pa. Calculate the pressure on the diver [g = 10ms^-2]

A. 6.20 x 10⁴ pa
B. 1.02 x 10⁵ pa
C. 1.54 x 10⁵ pa
D. 5.20 x 10⁵ pa

Question 9:

• WAEC 2004

A steel needle floating on water, sinks when kerosine is added to the water. This is because the kerosine

A. Increased the surface tension of the water
B. Reduces the density of the water
C. Reduces the surface tension of the water
D. Reduces the upthrust on the needle

Question 10:

• WAEC 2004

On which of the following factor does the viscosity of a liquid depend? i. Nature of the liquid. ii. Temperature of the liquid. iii. Area of the liquid surface

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