PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo
Light in a dark room:
 
This activity should be done at night or in a dark room.
  1. Ask one of your friends to hold a mirror in his/her hand at one corner of the room.
  2. Stand at another corner with a torch in your hand.
  3. Cover the glass of torch with your fingers and switch it on.
  4. Adjust your fingers with a small gap between them so that you can get a beam of light.
  5. Direct the beam of the torch light onto the mirror that your friend is holding.
Do you see a patch of light on the other side?
 
, a patch of light  on the other side.

Now, adjust the direction of the torch so that the patch of light falls on another friend standing in the room. What do you infer from this?
 
This activity shows that a that falls on it.