SC-458
Refraction
Lower Sec Science · Secondary 1 · Medium · Refraction
A light ray travels from water (relative optical density 1.33) into plastic. The ray bends away from the normal at the boundary. Which conclusion about the relative optical density of the plastic is correct?
- It must be greater than 1.33, for example 1.60.
- It must be equal to 1.33.
- It must be less than 1.33, for example 1.20.
- It must be 0, because light bends away from the normal.
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