Physics JAMB

A narrow beam of white light can be split up into different Colours by a glass prism. The correct explanation is that?

A. white light Is an electromagnetic wave
B. the prism has all the colours of the white light
C. different colours of white light travel with different speeds in glass
D. white light has undergone total Internal reflection in the prism

Correct Answer:

Option C – different colours of white light travel with different speeds in glass

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