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Refraction
SNC2D - Optics
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The index of refraction...
1 point
is represented by the variable v in the refraction equation n = c/v.
will always be a value less than 1.0, the maximum value it can be.
increases for optically dense material, meaning that light bends more.
increases when light enters a medium in which it speeds up
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Which of the following statements is false?
1 point
The angle of reflection is measured between the normal line and the reflected ray
If the angle between the mirror and reflected ray is 30 degrees, the angle of incidence is 30 degrees.
The reflected image in a mirror appears exactly the same distance behind the mirror as the object is in front of the mirror
Total internal reflection will not occur when light passes from a "fast" medium (e.g. air) to a "slow" one (e.g. water).
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Which of the following statements of refraction is true?
1 point
Mirages and apparent depth are 2 examples of refraction phenomena.
Nothing in the universe can travel faster than the speed of light, c, in a vacuum.
The index of refraction can be found by calculating the sine of the angle of incidence, and dividing it by the sine of the angle of reflection.
All of the above statements are true.
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When light travels from water (n = 1.33) to air (n = 1.00),
1 point
it will bend towards the normal.
it will pass straight through without refracting.
it will bend away from the normal.
it will speed up.
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The speed of light in a vacuum is 3.00 × 10^8 m/s while the speed of light in glass is 2.00 × 10^8 m/s. The index of refraction is...
1 point
0.66
6.00 × 10^8
1.5
1.50 × 10^8
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Which of the following is not an example of total internal reflection?
1 point
a mirrored window, such as in an interrogation room, where it is brightly lit on one side and dark on the other
an optical fiber cable, used to carry telephone signals on light
the sparkling of a diamond due to light being reflected back into the eyes of the observer
light coming in at greater than the critical angle to glass or plastic prisms in bike reflectors or in binoculars
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