Light of different colors in a glass prism travel at
A)different speeds.
B)the same speed.
C)the same speed in prisms and all materials.

Question

Quizplus · Accepted Answer

Different colors of light have different wavelengths, and since the speed of light is dependent on the wavelength, they will travel at different speeds through a medium like a glass prism. This is known as dispersion, and it causes the colors to separate as they pass through the prism.

Light of Different Colors in a Glass Prism Travel at