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Q.

Is it true that by rotating Newton’s colour disc, we can demonstrate the mixing of different colours of white light?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is True.
When the disc is rotated, the colours fade to white. In this way, Isaac Newton demonstrated that white light combines the seven colours in a rainbow. When the disc gets rotated, the colours will disappear. When the motor is turned on, the disk rotates rapidly due to the segments of colour on the disc. As a result, there will be mixing of colours takes place, and an approximate white is formed.
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Is it true that by rotating Newton’s colour disc, we can demonstrate the mixing of different colours of white light?