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16

Which of the following pairs of light rays shows the widest separation in the spectrum of white light?

  • A. Red and blue
  • B. Orange and green
  • C. Red and indigo
  • D. Violet and green
  • E. Yellow and red
View Answer & Discuss (6) NECO 2000
17

Which colour is deviated least when white light passes through a triangular prism?

  • A. green
  • B. indigo
  • C. red
  • D. violet
  • E. yellow
View Answer & Discuss (10) NECO 2002
18

Calculate the critical angle for light traveling from water to air. (Refractive index of water = 1.33)

  • A. 36.9°
  • B. 41.3°
  • C. 48.8°
  • D. 49.2°
  • E. 51.4°
View Answer & Discuss (2) NECO 2003
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19

The diagram above represents an experimental set-up for verifying?

 

  • A. lens formula
  • B. refraction laws
  • C. reflection laws
  • D. mirror formula
View Answer & Discuss (16) WAEC 2019
20

A ray of light traveling from a rectangular glass block of refractive index 1.5 into air strikes the block at an angle of incidence of 30. Calculate its angle of refraction.

  • A. 48.6°
  • B. 19.5°
  • C. 20.0
  • D. 45.0
View Answer & Discuss (14) WAEC 2019
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