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- 1. Multiple Choice
How does light behave as it enters these mediums?continue its path as straight line.bends toward the normalbends away from the normalreflects - 2. Multiple ChoiceAccording to Snell's Law, light passing from air to glass will cause the light tomaintain its original speedaccelerate while it is in glassincrease its speedreduce its speed
- 3. Multiple Choice
The velocity of light in vacuum is _______ m/s
3x108
3x1012
3x106
3x1010
- 4. Multiple ChoiceAbsolute refractive index of any medium is always _______.less than 1greater than 110
- 5. Multiple ChoiceThe formula to calculate the refractive index using speeds of light isn=cvn=v/cn=c/vv=nc
- 6. Multiple ChoiceThe formula to calculate the refractive index using angles in the different mediums isn = (sin i)(sin r)n = (sin i) / (sin r)n = (sin c) / (sin v)n = sin (i/r)
- 7. Multiple ChoiceSwimming pools and the ocean look shallower than they really are due to:reflectiondispersionrefractiontotal internal reflection
- 8. Multiple ChoiceIf a pulse of red light and a pulse of blue light travel in vacuumThe red pulse travels faster because its index of refraction is smallerThe blue pulse travels fasterThe two pulses travel at the same speedThe relative speed depends on the exact wavelengths of the red and blue pulses
- 9. Multiple ChoiceA light ray hits a plane mirror surface at 20 degrees to the normal. What is the angle between the incident ray and the reflected ray?20o40o70o30o
- 10. Multiple ChoiceThe formula for total internal reflection isn = 1 / (sin C)n = sin Cn = (sin 1)sin (n/C) = 1
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