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Light — Science STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8ScienceLight5 Marks
Question
Which of the following will cause regular reflection of light and which diffuse reflection of light?
  1. Polished wooden table.
  2. Chalk powder.
  3. Cardboard.
  4. Mirror.
  5. Paper.
  6. Marble floor with water spread over it.
✓

Answer

  1. Polished wooden table: Regular reflection since the surface is polished (plane).
  2. Chalk powder: Diffused reflection will occur because the surface of chalk powder is uneven.
  3. Cardboard: Diffused reflection of light since cardboard has an uneven surface.
  4. Mirror: Regular reflection since the surface of a mirror is plane.
  5. Paper: Diffused reflection since the surface of paper is uneven.
  6. Marble floor with water spread over it: regular reflection as the floor with water will behave as a plane surface.

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