Question

question Distinguish between the following pairs
1) Umbra and penumbra.
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2) Natural change and man-made change.
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3) Point source and extended source of light.
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Answer 1

Answer:

Light Why is there a shadow with both umbra and penumbra when the light source is larger ... Photographers often used point light sources when they want shadows in their ... without penumbras), and multiple or extended sources to make the shadow edges .

Explanation: