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
waec 1988physics

The correct answer is A. refraction

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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