Question
Umbra and Penumbra.
| Umbra | Penumbra |
| 1. The umbra is a central core of darkness which tapers away. | 1. The penumbra is an outer cone of partial shadow which diverges, instead of tapering. |
| 2. Umbra is shadow formed from a point source of light. | 2. It is the shadow formed from the extended source of light. |
| 3. It is dark | 3. It is faint |
| 4. Umbra is the area of total shadow | 4. Penumbra is the area of partial shadow. |
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