Class VIII

If light ray strikes a surface at right angle , it is reflected along
  1. same path
  2. opposite direction
  3. reflected acutely
  4. obtuse reflected
A tube containing two or more plane mirrors inclined at certain angles to each other is called a
  1. microscope
  2. telescope
  3. kaleidoscope
  4. periscope
Diamond is a
  1. transparent
  2. translucent
  3. opaque
  4. semi-absorbent
When light in passed through two consecutive mirrors resultant will be
  1. rainbow colors
  2. white beam
  3. no light
  4. dispersed light
Line which is at right angle to surface is called
  1. normal ray
  2. incident ray
  3. reflected ray
  4. all of them
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