Question

A region of partial darkness that surrounds the shadow is called the umbra.

• A. True
• B. False

Answer 1

The correct option is B False

Drawing the diagram of the situation:

1. The dark part of the shadow is the umbra, and the part that is a little lighter is the penumbra.
2. They can be experienced on Earth, but more readily in space, such as during a solar eclipse, when the Moon moves in front of the Sun and leaves a shadow on Earth.
3. The umbra is a central core of darkness that tapers away.
4. Umbra is a shadow formed from a point source of light.
5. Umbra is dark.
6. Umbra is the area of total shadow.

Note: The region of partial darkness that surrounds the shadow is called the penumbra.

Hence, the statement of the question is false.