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WorksheetsTotal Internal Reflection
Total questions: 11
Worksheet time: 2hrs 2mins
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.
Fiber optic cables work because of the principle of _____.
total internal refraction
incomplete internal refraction
total internal reflection
partial internal reflection
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
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
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
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
Light travels through a glass block as shown. Which angle is the critical angle for light in the glass?
A
B
C
D
The refractive index of a glass prism is 1.9. Determine its critical angle.
23o
30o
32º
35o
A ray of light travels from air to glass with an angle of incidence of 45o. If the critical angle is 42o what will happen at the boundary?
refract
totally internally reflect
travel along the boundary
reflect
The figure below is an optical phenomenon caused by the refraction of light. What is this effect called?
Dispersion
Mirage
Rainbow
Diffraction
