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You are given a disc divided into seven sectors with colours violet, indigo, blue, green, yellow, orange and red in them. What would be its colour when it is rotated rapidly? - Physics

Answer in Brief

You are given a disc divided into seven sectors with colours violet, indigo, blue, green, yellow, orange and red in them. What would be its colour when it is rotated rapidly?

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Solution

 

Newton’s colour disc— It is a circular disc taken by Newton to demonstrate that the recombination of seven colours produces white light. A circular cardboard disc which is divided into seven sectors and they were painted with the seven colours of VIBGYOR. The disc when rotated at a very high speed appears WHITE.

Concept: Dispersion of White Light into Constituent Colours
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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 5 Light Energy
Short/long Answer Question | Q 22 | Page 100
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