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1431
The distance between two successive trough of a wave is 0.4m. If the frequency of the source is 825Hz, Calculate the speed of the wave
  • A. 165.0 ms-1
  • B. 330.0ms-1
  • C. 41.5ms-1
  • D. 85.0ms-1
View Answer & Discuss WAEC 2016
1432
X-rays and infrared rays are both electromagnetic. Which common property do the waves have? Both waves
  • A. are longitudinal
  • B. have same frequency
  • C. have the same wavelength
  • D. travel at the same speed in a vacuum
View Answer & Discuss WAEC 2016
1433
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
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1434
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
1435
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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