Answer:
something that is produced by an agency or cause; result; consequence: Exposure to the sun had the effect of toughening his skin. power to produce results; efficacy; force; influence: His protest had no effect.
Refraction is the change in direction of propagation of a wave when the wave passes from one medium into another, and changes its speed. Light waves are refracted when crossing the boundary from one transparent medium into another because the speed of light is different in different media.
Step-by-step explanation:
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