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Light Traveling Along Normal

APPH12-14LDQW

A ray of light traveling directly along the normal strikes the boundary between two transparent media of different n-values.

Which one of the following occurs with the light's speed and path of travel?

A

The light does not change speed, and therefore does not bend.

B

The light does not change speed, but it does bend.

C

The light changes speed, and therefore bends.

D

The light changes speed, but it does not bend.