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1501
In a ray diagram for a thin converging lens, a ray that is not parallel to the optic axis but passes through the optic center will
  • A. pass through undeviated
  • B. pass through the center of curvature after refraction
  • C. emerge parallel to the principal axis
  • D. pass through the principal focus after refraction
View Answer & Discuss (2) JAMB 1991
1502
Which of the following correctly, describes the image of an object, 4cm from a diverging lens of focal length 12cm?
  • A. The image is virtual, 3cm in front of the lens
  • B. The image is real, 6cm behind the lens
  • C. The image is virtual, 6cm in front of the lens
  • D. The image is real, 3cm in front the lens
View Answer & Discuss (10) JAMB 1991
1503
Two tuning forks of frequency 256Hz and 260Hz are sounded close to each other. What is the frequency of the beats produced?
  • A. 2Hz
  • B. 4Hz
  • C. 8Hz
  • D. 258Hz
View Answer & Discuss JAMB 1991
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1504
A man hears his echo from a nearby hill 2s after he shouted. If the frequency of his voice is 260Hz and the wavelength is 1.29m, how far away is the hill?
  • A. 330.0m
  • B. 335.4m
  • C. 660.0m
  • D. 670.8m
View Answer & Discuss (8) JAMB 1991
1505

When the bottom tip of a vibrating tuning fork is held in contact with a wooden box, a louder sound is heard. This phenomenon is known as

  • A. beats
  • B. echoing
  • C. resonance
  • D. reverberation
View Answer & Discuss (3) JAMB 1991
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Post-UTME Past Questions - Original materials are available here - Download PDF for your school of choice + 1 year SMS alerts
Post UTME Past Questions Agent
WAEC and NECO CBT Software for Computers and Laptops - Candidates, Schools, Centres, Resellers - 100% Offline -Download Now
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