Class 10 Chapter no. 10 Light Reflection and Refraction

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Across
  1. 3. total internal reflection is observed in
  2. 6. out of seven colors of white light, which color has maximum wavelength?
  3. 8. the power of a lens is -4.0D. what is the nature of the lens?
  4. 9. an image formed in a spherical mirror has magnification -2.Is image real or virtual?
  5. 10. light travel fastest
  6. 11. focal length of plane mirror is
Down
  1. 1. the order of colors arranged in spectrum of white light is expressed as
  2. 2. when we insert a coin to a glass half filled slightly which is due
  3. 3. the unit power of lens is
  4. 4. the phenomenon of spreading of light into its constituents is called as
  5. 5. the bouncing back of the ray in the same medium is called as
  6. 7. which one of the following materials cannot be used to make a lens?