Q. Which among the following is the correct term for the inner portion of moon’s shadow?
Answer: Umbra
Notes: Umbra is shadow is a dark area which is formed when 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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