Q. 1. A student had a ball, a screen and a torch in working condition. He tried to form a shadow of the ball on the screen by placing them at different positions. Sometimes the shadow was not obtained. Explain.

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Some of the reason due to which shadow was not obtained can be

  • The screen is far away from the
  • The beam of light from the torch is falling parallel to the screen on the
  • The torch is kept away from the

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