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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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766
When an astronomical telescope is in normal adjustment, the focal length of the objective lens is 50cm and that of the eyepiece is 2.5om. What is the distance between the lenses?
  • A. 20.0cm
  • B. 47.5cm
  • C. 50.0cm
  • D. 52.5cm
  • E. 125.0cm.
View Answer & Discuss (1) WAEC 1992
767
Which of the following is used for controlling the amount of light entering the eye?
  • A. Cornea
  • B. Pupil
  • C. Iris
  • D. Optic nerve
  • E. Ciliary muscle
View Answer & Discuss (4) WAEC 1992
768

The angle of deviation of light of various colours passing through a glass prism decreases in the order of

  • A. blue orange and red
  • B. red, blue and orange
  • C. blue, red and orange
  • D. red, orange and blue
  • E. orange, blue and red
View Answer & Discuss (5) WAEC 1992
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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769
The change of the direction of a wavefront as a result of a change in the velocity of the wave in another medium is called
  • A. refraction
  • B. reflection
  • C. diffraction
  • D. polarization
View Answer & Discuss (1) WAEC 1992
770

The diagram above shows a waveform in which energy is transferred from A to B in a time of 2.5 x 10-3s. Calculate the frequency of the wave

  • A. 2.0 x 103Hz
  • B. 1.0 x 103Hz
  • C. 4.0 x 10-2Hz
  • D. 1.0 x 10-3Hz
  • E. 5.0 x 104Hz.
View Answer & Discuss (7) WAEC 1992
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
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WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now