Question

What are the conditions essential for a shadow formed?

Answer 1

Answer:

Following are the conditions.

1. the size of the object should be enough to block the light.
2. a light emitting source
3. the light should fall the object whose shadow is required.
4. the darkness of the shadow depends on no. of sources of light and their positions.

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Answer 2

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.