What is shadow? What are the three essential conditions for the formation of shadow.
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Answer:
The following three things are required for a shadow to form: a source of light. an opaque object. a screen or surface behind the object.
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Explanation:
A dark region formed when light is obstructed by an opaque object is called shadow.
1.The shape of the shadow depends on the shape of the object and the position of source of light.
2. It only shows the shape or an outline of the object and not the details.
3.It is always black not depending on the colour of the object used to make the shadow.
4.The size of a shadow varies depending on the distance between the object and the source of light and the distance between the object and the screen.
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