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The change of the direction of a wave-front because of a change in the velocity...

Physics
WAEC 1988

The change of the direction of a wave-front because of a change in the velocity of the wave in another medium is called?

  • A. refraction
  • B. reflection
  • C. diffraction
  • D. interference
  • E. dispersion
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Correct Answer: Option A
Explanation

Refraction: change in direction of propagation of any wave as a result of its traveling at different speeds at different points along the wave front.

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