Refraction and Reflection Basics
2 years ago
thephysicsgrove
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10 QuestionsShow answers
  • Question 1
    30 seconds
    Q. How does light behave as it enters these mediums?
    answer choices
    continue its path as straight line.
    bends toward the normal
    bends away from the normal
    reflects
  • Question 2
    30 seconds
    Q. According to Snell's Law, light passing from air to glass will cause the light to
    answer choices
    maintain its original speed 
    accelerate while it is in glass
    increase its speed
    reduce its speed
  • Question 3
    45 seconds
    Q.

    The velocity of light in vacuum is _______ m/s

    answer choices

    3x108

    3x1012

    3x106

    3x1010

  • Question 4
    30 seconds
    Q. Absolute refractive index of any medium is always _______.
    answer choices
    less than 1
    greater than 1
    1
    0
  • Question 5
    30 seconds
    Q. The formula to calculate the refractive index using speeds of light is
    answer choices
    n=cv
    n=v/c
    n=c/v
    v=nc
  • Question 6
    30 seconds
    Q. The formula to calculate the refractive index using angles in the different mediums is
    answer choices
    n = (sin i)(sin r)
    n = (sin i) / (sin r)
    n = (sin c) / (sin v)
    n = sin (i/r)
  • Question 7
    30 seconds
    Q. Swimming pools and the ocean look shallower than they really are due to:
    answer choices
    reflection 
    dispersion
    refraction
    total internal reflection
  • Question 8
    30 seconds
    Q. If a pulse of red light and a pulse of blue light travel in vacuum
    answer choices
    The red pulse travels faster because its index of refraction is smaller
    The blue pulse travels faster
    The two pulses travel at the same speed
    The relative speed depends on the exact wavelengths of the red and blue pulses
  • Question 9
    30 seconds
    Q. A 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?
    answer choices
    20o
    40o
    70o
    30o
  • Question 10
    30 seconds
    Q. The formula for total internal reflection is
    answer choices
    n = 1 / (sin C)
    n = sin C
    n = (sin 1)
    sin (n/C) = 1
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