Question

the penumbra is the lighter part of a shadow where light is partially blocked. if you stood within an object’s penumbra, you would be able to see only part of the light source.
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differentiate examine the image. explain the difference between the umbra and penumbra. check your answer.

Explanation:

The umbra is the darkest part of a shadow where the light source is completely blocked (if in the umbra, you see no light source). The penumbra is the lighter part where light is only partially blocked (if in the penumbra, you see part of the light source). Visually, the umbra is the inner, darker region of the shadow, and the penumbra is the outer, lighter region surrounding the umbra.

Answer:

• Umbra: It is the darkest part of a shadow. In this region, the light source is completely blocked by the object (e.g., the ball). If you are within an object’s umbra, you would not see the light source at all.
• Penumbra: It is the lighter part of a shadow. In this region, the light is only partially blocked by the object. If you are within an object’s penumbra, you would be able to see only part of the light source.

Visually, the umbra is the inner, more concentrated dark area of the shadow, while the penumbra is the outer, less intense (lighter) area that surrounds the umbra.