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| Q. |
The darkest portion of the shadow cast during an eclipse is– |
| A. | Corona |
| B. | Umbra |
| C. | Penumbra |
| D. | Black hole |
| Answer» B. Umbra | |
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Explanation: The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body. An observer in the umbra experiences a total eclipse. |
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