When the object is smaller than the source,the umbra is like a __________ that extends to a finite distance .
Answers
You can in many situation consider a regular lamp a point source and then the umbra will always be larger the the object. The sun isn't a point source of light, it's significantly bigger than the moon, so the light goes around the outside of the moon and makes its shadow smaller than the moon is.
Answer:
The correct answer is : Cone
Explanation:
When the object blocking a source of light, such as the sun or a light bulb, is smaller than the source itself, the shadow that is cast is not a perfect one. Instead, it is a more complex shape, with a central area called the umbra that is darker than the surrounding area.
In the case of a solar eclipse, for example, the moon is smaller than the sun, so the shadow that it casts on the Earth is cone-shaped, with the narrowest part of the cone being the umbra. This is the region where the moon completely blocks the sun, and observers in this region will experience a total solar eclipse.
The umbra extends to a finite distance because it is limited by the size of the object casting the shadow. Beyond a certain distance, the shadow becomes less distinct and eventually disappears altogether. This is known as the penumbra, and it is where the shadow becomes less dark and more diffuse.
Overall, the shape and size of a shadow depend on the relative size and distance between the object blocking the light and the source of that light. So when the object is smaller than the source, the umbra is like a cone that extends to a finite distance.
To learn more about umbra, visit:
https://brainly.in/question/46904952
To learn more about eclipse, visit:
https://brainly.in/question/8847710
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