Material: Glass, 5 rupee coin, Pencil, metallic vessel, water etc.
  1. Keep a 5 rupee coin in a metallic vessel.
  2. Slowly go away from the vessel.
  3. Stop at the place when the coin disappears.
  4. Keep looking in the direction of the coin.
  5. Ask a friend to slowly fill water in the vessel. You will be able to see the coin once the level of water reaches a certain height. Why does it happen?
Reappearing coin
Reappearing coin

3 Marks
Watch Video of the above activity (1:46):
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01 September 2019 at 19:25

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