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Physics 2016 WAEC Past Questions

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26
The image formed by a concave mirror is real, inverted and magnified, when object is placed
  • A. at the focus
  • B. at the centre of curvature
  • C. beyond the centre of curvature
  • D. between the centre of curvature and the focus
View Answer & Discuss (4) WAEC 2016
27
Total internal reflection. i. is a phenomenon of refraction of light. ii. occurs when light rays travel into a denser medium. iii. occurs when the critical angle is just exceeded. iv. is a phenomenon of reflection of light. Which of the statements above are correct?
  • A. i and ii only
  • B. i and iii only
  • C. i, ii and iii only
  • D. i, iii and iv only
View Answer & Discuss (2) WAEC 2016
28
Complementary colours are those which
  • A. have the same refractive index
  • B. have the same wavelength
  • C. add-up to produce black light
  • D. add-up to produce white light
View Answer & Discuss WAEC 2016
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29
The diagram given illustrates the waveform of a note produced by vibrations in an air column of length L. If the speed of sound in air is V, derive an expression for the frequency of the notes
  • A. \(\frac{V}{L}\)
  • B. \(\frac{5VL}{2}\)
  • C. \(\frac{5L}{4V}\)
  • D. \(\frac{5V}{4L}\)
View Answer & Discuss (1) WAEC 2016
30
The pair of musical instruments that works on the vibration of air in pipes is
  • A. piano and the organ
  • B. guitar and the flute
  • C. trumpet and the violin
  • D. flute and the trumpet
View Answer & Discuss (1) WAEC 2016
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