Class VIII

An instrument which enables us to see distant objects clearly is
  1. microscope
  2. telescope
  3. kaleidoscope
  4. periscope
The ray that comes back from the surface after reflection is called:
  1. Reflected Ray
  2. Normal
  3. Incident Ray
  4. Refracted Ray
Ray which is striking surface is
  1. normal ray
  2. incident ray
  3. reflected ray
  4. all of them
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
A snail crawls at speed of
  1. 1.7 m/s
  2. 0.03 m /s
  3. 25m/s
  4. 10m/s
Time Elapsed

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