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- 1. Multiple Choice
What happens to light during total internal reflection?
The angle of incidence is greater than the critical angle.
The angle of reflection is the same as the critical angle.
The angle of refraction is less than the critical angle.
The angle of incidence is zero.
- 2. Multiple Choice
Fiber optic cables work because of the principle of _____.
total internal refraction
incomplete internal refraction
total internal reflection
partial internal reflection
- 3. Multiple Choice
Choose the correct statement that describes what happens to the ray of light if the critical angle is 48o and the angle of incidence is 48o
refract
totally internally reflect
travel along the boundary
- 4. Multiple Choice
What is total internal reflection
Where a wave is refracted at the boundary between a dense medium and a less dense medium when the angle of incidence is greater than the critical angle.
Where a wave is refracted at the boundary between a dense medium and a less dense medium when the angle of incidence is smaller than the critical angle.
Where a wave is reflected at the boundary between a dense medium and a less dense medium when the angle of incidence is greater than the critical angle.
Where a wave is reflected at the boundary between a dense medium and a less dense medium when the angle of incidence is smaller than the critical angle.
- 5. Multiple Choice
see image
A
B
C
D
- 6. Multiple Choice
Give a reason why the signal changes direction at A
its a flat surface
the density of the glass is greater than the density of the air
the angle of incidence is more than 90 degrees
The density of the glass is less than the density of the air
- 7. Multiple Choice
Which one is true for the formation of a mirage?
The light first goes through TIR and then passes through the colder layers of air to hotter layers. (TIR is total internal reflection)
The light first goes through TIR after passing through the colder layers of air to hotter layers.
The light first goes through TIR and then passes through the hotter layers of air to colder layers.
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