Class VIII

We can see ourselves in mirror or polished surface but not on walls because the reflection from walls is:
  1. Regular reflection
  2. Normal reflection
  3. Irregular reflection
  4. Specular reflection
Light Year is related to
  1. Energy
  2. Speed
  3. Distance
  4. Intensity
Glass, tracing paper are
  1. transparent
  2. translucent
  3. opaque
  4. semi-absorbent
The phenomenon of breaking up of light into its seven constituent colours is known as ...
  1. Reflection of light
  2. Refraction of ligh
  3. Dispersion of light
  4. Radiation of light
Primary colors of light includes
  1. red
  2. green
  3. blue
  4. all of them
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