Waec Physics 2007 Past Questions and Answers

Question 1:

• WAEC 2007

Which of the following observations is not an effect of surface tension?

A. Droplets of water dripping slowly from a tap
B. Mercury spilled on a clean glass plate forms spherical droplets
C. An indect walking across the surface of a pond
D. Water flowing out more easily then engine oil from a container

Question 2:

• WAEC 2007

Which of the following observations is not an effect of surface tension?

A. Droplets of water dripping slowly from a tap
B. Mercury spilled on a clean glass plate forms spherical droplets
C. An indect walking across the surface of a pond
D. Water flowing out more easily then engine oil from a container

Question 3:

• WAEC 2007

Which of the following physical quantities is correctly paired with it's corresponding S.I unit?

A. Density[kg m³]
B. Power[Js^-1]
C. Specific latent heat [J kg^-1K^-1
D. Pressure [Nm^-1]

Question 4:

• WAEC 2007

A liquid of volume 2.00 m³ and density 1.00 x 10³ is mixed with 3.00 m³ of another liquid of density 8.00 x 10³kg m^-3. Calculate the density of the mixture [Assuming there is no chemical reaction]

A. 5.20 x 10² kg m^-3
B. 1.13 x 10³ kg m^-3
C. 8.80 x 10² kg m^-3
D. 5.20 x 10² kg m^-3

Question 5:

• WAEC 2007

Which of the following statements about solid friction are correct? It i. is a force ii. occurs between the surfaces of two bodies in contact iii. depends on the area in contact

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