1
Which of the following comparisons between umbra and penumbra is correct?
| Umbra | Penumbra | |
| A | It is the less dark part of a shadow. | It is the darkest part of a shadow. |
| B | It is outerpart of a shadow. | It is central part of a shadow. |
| C | No light reaches to this part. | Some light can reach this part. |
| D | It is always larger than the penumbra. | It is always smaller than the umbra. |
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A
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B
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C
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D