Waec 2011 Physics Past Questions And Answers

Note: You Can Select Post UTME Schools Name Below The Exam Year.
1

Which of the following statements correctly defines a simple machine? A device

  • A. that can produce electric current
  • B. which can only carry people from one place to another
  • C. with which work can be done easily
  • D. which changes the state of rest or of uniform motion of an object
View Discussion (0)WAEC 2011 OBJ
2

Which of the following statements about the image formed by a plane mirror is not correct?

  • A. it is laterally inverted
  • B. it has unit magnification
  • C. it is formed by actual intersection of rays
  • D. its distance from the mirror is equal to that of the object from the mirror
View Discussion (0)WAEC 2011 OBJ
3

The radius of a wheel is 30.0 cm and that of its axle is 6.0cm. Calculate the effort required to lift a load of 120.0N using this machine. Assuming 100% efficiency

  • A. 600.0N
  • B. 40.0N
  • C. 24.0N
  • D. 20.0N
View Discussion (0)WAEC 2011 OBJ
4

A body is pulled over a distance of 500m by a force of 20N. If the power developed is o.4 kW, calculate the time interval during which the force is applied

  • A. 0.2s
  • B. 2.5s
  • C. 25.0s
  • D. 250.0s
View Discussion (0)WAEC 2011 OBJ
5

Explain why water in a narrow glass tube has a concave meniscus while mercury, in the same tube, has a convex meniscus.

View Discussion (0)WAEC 2011 THEORY
6

A hypsometer is used for determining

  • A. steam point
  • B. relative humidity
  • C. ice point
  • D. relative density
View Discussion (0)WAEC 2011 OBJ
7

(a) Explain diffusion.

(b) Give one reason why the rate of diffusion is higher in gases than in liquids at the same temperature.

View Discussion (0)WAEC 2011 THEORY
8

Which of the following statements about anomalous expansion of water are correct? i. There is contraction between 0oC and 4oC. ii. There is expansion between 0oC and 100oC. iii. The volume is minimum at 4oC. iv. The volume is maximum at 4oC

  • A. i and ii only
  • B. ii and iii only
  • C. i and iii only
  • D. ii and iv only
View Discussion (0)WAEC 2011 OBJ
9

Which of the following substances does not conduct electricity?

  • A. graphite
  • B. glass
  • C. sulphuric acid
  • D. table salt solution
View Discussion (0)WAEC 2011 OBJ
10

A stone of mass 300g is released from rest from the top of a bulding of height 100m. Determine the kinetic energy gained by the stone when it is a quarter way down from the point of release.[g = 10 ms-2]

  • A. 750.0J
  • B. 225.0J
  • C. 75.0J
  • D. 22.5J
View Discussion (0)WAEC 2011 OBJ