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Light, Shadows and Reflections — Science STD 6 — Question

CBSE BoardEnglish MediumSTD 6ScienceLight, Shadows and Reflections1 Mark
Question
What is umbra and penumbra?
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Answer

Umbra is the dark region behind object facing light which does not receive light at all.
Penumbra is the less dark part of shadow. It is the outer part of shadow.

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