SC-503
Refraction
Lower Sec Science · Secondary 1 · Hard · Refraction
A light ray passes from air into a block of plastic. The angle of incidence is and the angle of refraction is . Which statement about the optical density of air and plastic is correct?
- Plastic is optically denser than air because the ray bends towards the normal in plastic.
- Plastic is optically less dense than air because the ray bends towards the normal in plastic.
- Air is optically denser than plastic because the ray bends away from the normal in plastic.
- Air and plastic have the same optical density because the ray changes direction.
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