Question

what is a shadow? What are the characteristics of shadow?

Answer 1

A shadow is a dark (real image) area where light from a light source is blocked by an opaque object. It occupies all of the three-dimensional volume behind an object with light in front of it. The cross section of a shadow is a two-dimensional silhouette, or a reverse projection of the object blocking the light.

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Answer 2

Answer:

A shadow is defined as a dark area formed when an opaque object obstructs the path of light.

A shadow has the following characteristics:

i) The colour of the shadow is always dark, that is, black or grey, irrespective of the colour of the object.

ii) A shadow shows only the outline and the shape of the object, and not its detail.

iii) The size of the shadow depends on –

a) the distance between the light source and the object, and

b) the distance between the object and the screen.

iv) A shadow cannot be obtained without a screen.

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