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121

I. Temperature.
II. Density of air molecules
III. Pressure
IV. Pitch
Which of the above will affect the velocity of sound in the air

  • A. I and II only
  • B. II and IV only
  • C. I,II and IV only
  • D. I,II,III nad IV
View Answer & Discuss (7) JAMB 2002
122

Which of the following is a characteristics of stationary waves?

  • A. They are formed by two identical waves travelling in opposite directions
  • B. they can be transverse or longitudinal
  • C. The distance between two successive nodes is one wavelenght
  • D. The antinode is a point of minimum displacement
View Answer & Discuss (10) JAMB 2002
123
To produce an enlarged and erect image with a concave mirror,the object must be positioned
  • A. at the principal focus
  • B. beyond the centre of curvature
  • C. between the principal focus and the centre of the curvature
  • D. between the principal focus and the pole
View Answer & Discuss (9) JAMB 2002
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124

the property that is propagated in a traveling wave is

  • A. frequency
  • B. amplitude
  • C. energy
  • D. wave lenght
View Answer & Discuss (25) JAMB 2002
125
Which of the following eye defects can be corrected using a cylindrical lens.
  • A. myopia
  • B. Astigmatism
  • C. Presbyopia
  • D. Chromatic abiration
View Answer & Discuss (9) JAMB 2002
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