point of sources and Extended sources of light
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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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Ans a) 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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