Waec 2004 Physics Past Questions And Answers

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

A body is dropped from a certain height above the ground level, falls with uniform

  • A. speed
  • B. velocity
  • C. acceleration
  • D. retardation
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2

When a metal ball is heated through 30oC,its volume becomes 1.0018cm3. If the linear expansivity of the material of the ball is 2.0 x 10-5 K-1, calculate its original volume

  • A. 1.0000cm3
  • B. 1.0020cm3
  • C. 1.0036cm3
  • D. 1.0180cm3
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3

A body of mass 8kg moving with a speed of 30ms-1 is brought to rest in 2.5s by a constant retarding force. Calculate the magnitude of the force

  • A. 240N
  • B. 96N
  • C. 20N
  • D. 9N
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4

When compared with water, mercury is preferred as a thermometric liquid because

  • A. has a higher density
  • B. has lower specific heat capacity
  • C. exhibits anomalous thermal expansion
  • D. contains molecules which have very strong adhesive forces
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5

(a) Define diffusion

(b) State Graham's law of diffusion

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6

A force acting on a body causes a change in the momentum of the body from 12kg ms-1 to 16kg ms-1 in 0.2s. calculate the magnitude of the force

  • A. 140.0N
  • B. 20.0N
  • C. 4.0N
  • D. 0.8N
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7

a

The diagram below illustrates the path ABC, in a vertical x z plane, of a bullet shot into the air at an angle above the horizontal. Copy the diagram, and, using arrows, indicate the relative magnitudes and directions of the vertical and horizontal components of the velocities of the bullet at the point A, B and C.

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8

A ball bearing is projected vertically upwards from the ground with a velocity of 15ms-1. Calculate the time taken by the ball to return to the ground [g = 10ms-1]

  • A. 1.5s
  • B. 3.0s
  • C. 5.0s
  • D. 7.5s
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9

Which of following functions is performed by manganese IV oxide in the Lenclanche cell?

  • A. control of local action
  • B. depolarisation of the cell
  • C. regulating current flow in the cell
  • D. reduction of the internal resistance of the cell
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10

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
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