PH-453
Refraction
Physics · Secondary 3 · Medium · Refraction
A light ray travels from air into a block of glass. The angle of incidence is 30° and the angle of refraction is 19°. If the angle of incidence is increased to 40°, what will happen to the angle of refraction?
- It stays at 19°.
- It becomes smaller than 19°.
- It becomes larger than 19° but smaller than 40°.
- It becomes larger than 40°.
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