Question

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d) What are the conditions necessary for shadow formation ​

Answer 1

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.

Answer 2

Explanation:

An opaque object blocks the light falling on it. This creates an area of darkness on the side of the object away from the source of light. A translucent object also creates a faint area of darkness. An area of darkness formed by an opaque object obstructing light is called a shadow. 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.

A shadow will not form if any of these is absent. This explains why we cannot see a shadow in the dark. It is only when light rays are obstructed by an opaque object that we get a shadow of the object.

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