alleryNewton showed that white light can be reformed from the spectrum using:
AA convex lens
BA concave mirror (option)
CA second identical prism placed inverted relative to the first
DA water tank
Answer & Solution
Correct answer: C. A second identical prism placed inverted relative to the first
1. Newton dispersed sunlight with one prism into seven colours.
2. A second identical prism placed inverted made the rays converge.
3. White light re-emerged on the other side of the second prism.
_Source: syllabus Science, Ch 10 "The Human Eye and the Colourful World", §10.4_
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