Question

If the light enters a medium from straight on at 90° to the surface, the light will still slow down, but it won't change direction at

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True
False

Answer 1

When light enters a medium from straight on at 90° to the surface, it slows down and changes direction. This is due to the phenomenon of refraction.

Step-by-step explanation:

False

When light enters a medium from straight on at 90° to the surface, it does slow down, but it also changes direction. This phenomenon is known as refraction. Refraction occurs because light travels at different speeds in different mediums. When light enters a denser medium, such as water or glass, it slows down and bends towards the normal line, which is an imaginary line perpendicular to the surface of the medium.

Learn more about Refraction of light