when the source is a point source of
light and the object is bigger than
the source.
o when the source of light is
bigger then the object.
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light sources emit light waves that travel away from them. ... The closer an object is to the light source, the larger the shadow it casts. This is because an object closer to the source will block a larger area of the light, increasing its shadow size.
Explanation:
Point source is particularly localised emission or source of light at a point which decreases in proportiom to the inverse square of distance from the source while extended source are collection of such point sources of light together.
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