A vertical ray of light strikes the horizontal surface of some water:
- What is the angle of incidence?
- What is the angle of refraction?
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- Angle of incidence is 0° because light ray is travelling along the normal and angle of incidence is the angle between the light ray and the normal.
- If the incident ray falls normally on the surface, no bending of light ray takes place. So, the angle of refraction is also 0°.
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