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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
_____ cables transmit beams of light without allowing any of the light to escape until it gets to the end of the cable.
Ethernet
Fiber optic
Armored
Coaxial
- 3. Multiple Choice
When angle of incident (i) equals to critical angle (c) if light is traveled from a denser medium to a less dense medium,
total internal reflection occurs.
angle of refraction is equal to 90 degree.
light is refracted out
light travel in straight line
- 4. Multiple Choice
Chose the TWO conditions are NOT correct for total internal reflection to take place
The incident angle should be less than the critical angle
The incident angle should be greater than the critical angle
Light should travel from a denser to a lighter medium
Light should travel from a lighter to a denser medium
- 5. Multiple Choice
What is the refractive index of a fibre optic pipe if the critical angle is 30 degree?
Outside is air.
2.0
1.7
2.4
- 6. Multiple Choice
Which diagram correctly describes the critical angle c for air-water surface?
A
B
C
D
- 7. Multiple Choice
Light travels through a glass block as shown. Which angle is the critical angle for light in the glass?
A
B
C
D
- 8. Multiple Choice
The refractive index of a glass prism is 1.9. Determine its critical angle.
23o
30o
32º
35o
- 9. Multiple Choice
see image
A
B
C
D
- 10. Multiple Choice
see image
A
B
C
D
- 11. Multiple Choice
If the light is travelling from glass with a wavelength of 600nm to diamond, then what is the wavelength in the diamond? (n of glass = 1.5 and n of diamond = 2.4)
236nm
256nm
610nm
375nm
- 12. Multiple ChoiceWhat is the most prominent use of Fiber Optics today?PhonesTelevision ScreensThe InternetMRI imaging
- 13. Multiple ChoiceAbsolute refractive index of any medium is always _______.less than 1greater than 110
- 14. Multiple Choice
When the angle of refraction is 90 the angle of incidence is called the...
Angle of incidence
Critical angle
Angle of total internal reflection
Angle of refraction
- 15. Multiple Choice
The figure below is an optical phenomenon caused by the refraction of light. What is this effect called?
Dispersion
Mirage
Rainbow
Diffraction
- Answer choicesTagsAnswer choicesTags