Physics, asked by cutegirl2020, 10 months ago

formation of an image when object is point source and extended source​

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Answered by karkalacharitha
2

Answer:

A point source is really a mathematical construct. It is a point singularity of emission on a source. Point sources emit spherical waves of radiation. The surface of constant phase of light from the point source is called a wavefront. In other words, a wavefront is a surface of constant spatial phase. Extended sources are made up of a collection of such point sources

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