What is Shadow:

Shadows are formed when light is stopped by an object. A dark shape on a surface that is caused by an object between the light and that surface , then a shade is formed behind it and this shade cast by an object is called its shadow.


Requirements to form a shadow?

  1. Source of light.
  2. An Opaque object ( to obstruct the path of light).
  3. A screen on which the shadow can be seen.


Characteristics of a Shadow:

  • It is always erect ( same side up as the object).
  • Irrespective of the colour of the object, the shadow is always black.
  • It can be smaller, equal or bigger than the object.
  • Shadow is formed on the opposite side of source of light.
  • Shadow is real because it can be formed on screen.
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Maninder Singh's photo - Co-founder, Teachoo

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Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo