Light Energy Class VIII crossword puzzle

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Across
  1. 3. the geometric center of a spherical mirror
  2. 6. the bending of light rays when travelling between two mediums
  3. 8. an image that cannot be captured on a screen
  4. 9. The illusion of a waterbody seen in deserts and on hot roads
Down
  1. 1. the splitting of sunlight into its constituent colors
  2. 2. a spherical mirror whose reflective surface is curves inwards
  3. 4. band of seven colors obtained after white light strikes a prism
  4. 5. a spherical mirror whose reflective surface is curves outwards
  5. 7. an image that can be captured on a screen