Question

Where is the darkest part of a shadow?​

Answer 1

Answer:

The closer the object is to the surface, the darker and more definite its shadow becomes. The darkest part of a shadow is called the umbra,where the light source is completely blocked by the occluding body..

Hope it helps...

Answer 2

Answer:

Umbra

Explanation:

scale).

Umbra (A) and penumbra (B)

The umbra, penumbra and antumbra are three distinct parts of a shadow, created by any light source after impinging on an opaque object. Assuming no diffraction, for a collimated beam (such as a point source) of light, only the umbra is cast.

Umbra, penumbra and antumbra of Earth and images that could be seen at some points in these areas (note: the relative size and distance of the bodies shown are not to scale).

These names are most often used for the shadows cast by celestial bodies, though they are sometimes used to describe levels, such as in sunspots.