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Dispersion of White Light through Prism

If the speed ...

Question

If the speed of rotation of Newton's colour disc is fast enough, the various colours would blend and produce
(a) white light
(b) red light
(c) yellow light
(d) no light at all

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Solution

(a) White light

If the speed of rotation of Newton's colour disc is fast enough, the various colours would blend and produce white light.

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