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The phenomenon of dispersion was first scientifically demonstrated by:
Answer & Solution
Correct answer: A.
1. Isaac Newton used a glass prism to obtain the spectrum of sunlight.
2. He further showed that the spectrum could be recombined into white light.
3. This established that white light is composed of seven colours.
_Source: NCERT Class 10 Science, Ch 10 "The Human Eye and the Colourful World", §10.4_
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