Question

refraction or the bending of waves takes place when a light wave changes a color. b frequency. c intensity. d speed.

Explanation:

Refraction of light occurs when light passes from one medium to another with a different optical density, causing a change in its speed. Color, frequency, and intensity changes are not the cause of refraction. So the correct option is D as refraction happens due to speed change.

Answer:

D. speed.