1. An observer heard the sound of thunder 5.8s after the lightning flash was seen. How far was he from the source? [Speed of sound in air = 330ms-1]
    • A. 957m
    • B. 1914m
    • C. 3828m
    • D. 8700m
    • E. 17400m

2. 

The space between the two walls of a vacuum flask is completely evacuated to reduce heat loss by
  • A. condensation
  • B. conduction
  • C. convection
  • D. evaporation
  • E. radiation

 

3.  Which of the following substances undergoes sublimation?

  • A. Ether
  • B. Ice
  • C. Iodine
  • D. Naphthalene
  • E. Turpentine

4.  Determine the value of x from the nuclear reaction below,

PHY

  • A. 220
  • B. 222
  • C. 224
  • D. 226
  • E. 228

5.  Which of the following statements about the pressure in a liquid is NOT correct? It

  • A. acts in all direction
  • B. changes with the material of the container
  • C. is the same at all points in the same horizontal plane
  • D. varies with the density of the liquid
  • E. varies with the depth of the liquid

6. In which of the following fields is repulsion NOT experienced?

  • A. Electrical only
  • B. Gravitational only
  • C. Magnetic only
  • D. Magnetic and electrical
  • E. Magnetic and gravitational

7.  A ball of mass 100g falls from a height of 5m onto a concrete floor and rebounds to a height of 3m. Calculate the energy lost. (g = 10ms-2)

  • A. 2J
  • B. 20J
  • C. 100J
  • D. 1000J
  • E. 2000J

8. Two forces of magnitude 8N and 4N act at right angle to each other. The angle between the resultant and the 8N force is

  • A. 23.9°
  • B. 26.6°
  • C. 29.5°
  • D. 60.0°
  • E. 63.4°

9. The defect of the eye lens which occurs as a result of weak ciliary muscles is called

  • A. astigmatism
  • B. hypermetropia
  • C. myopia
  • D. presbyopia
  • E. spherical aberration

10.  Which of the following pairs of phenomena helps in the resolution of the wave-particle paradox of matter?

  • A. Compton effect and thermionic emission
  • B. Electron diffraction and refraction
  • C. emission and absorption of light
  • D. Interference and polarization
  • E. Reflection and photoelectric effect

All Subjects

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