Class VII

When light enters a denser medium, it must leave object from
  1. the same point
  2. a different point
  3. the far-edge
  4. the close-edge
Filters do not
  1. change the light
  2. change the color
  3. change the primary colors
  4. change the secondary colors
Refractive index of ice is
  1. 0.5
  2. 1.5
  3. 1.33
  4. 1.31
Scientist who introduced dispersion of light was
  1. French
  2. English
  3. Chinese
  4. Spanish
A blue filter would
  1. allow green and red to pass
  2. allow blue and its components to pass
  3. allow blue color only to pass
  4. allow all colors except blue
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