What is the effect of increasing the angle of incidence beyond the critical angle?
Correct Answer: Total internal reflection occurs.
- Step 1: Understand what the angle of incidence is. It is the angle at which a light ray hits a surface.
- Step 2: Learn about the critical angle. This is the maximum angle of incidence at which light can still pass into a second medium.
- Step 3: Know that when the angle of incidence is equal to the critical angle, light refracts at 90 degrees along the boundary.
- Step 4: Realize that if the angle of incidence is increased beyond the critical angle, light cannot pass into the second medium.
- Step 5: Understand that instead of refracting, the light reflects back into the first medium. This is called total internal reflection.
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