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Questions
If a ray of light passes from medium I to medium II without any change of direction, what can be said about the refractive indices of these media (angle I is not 0)?
A ray of light travels from one medium to another medium with no change in direction. If the angle of incidence is not zero, what can be said about the refractive indices of these media?
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Solution
When a ray of light travels from medium I to medium II without any change of direction, it is possible under either of the following two conditions:
- A ray of light is incident normally on the surface separating two media.
- The refractive index of the medium I is equal to the refractive index of medium II.
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