Q.

Which one of the following is responsible for the working of New-ton's colour disc experiment?

A. Formation of pure spectra
B. Formation of impure spectra
C. Persistence of vision
D. Principle of complementary colour
Answer» C. Persistence of vision
Explanation: A Newton Disc can be created by painting a disc with the seven different colours. A combination of red, green and blue in the circular disc will yield the same result. This is due to the phenomenon called persistence of vision.
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