The fully shaded region or the darker region of a shadow is called_______

Umbra

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Penumbra

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Ultraumbra

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Sub umbra

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Solution

The correct option is A
Umbra

The fully shaded inner region of a shadow where no rays of light are present is called umbra. The less dark region of the shadow that surrounds the umbra is called the penumbra as some light rays enter this region.

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What is the less shaded outer region of a shadow called ___?

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