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Question
A disc in which seven rainbow colours are equally spread over an area, which on rotation, fades to white colour is called _______.
A disc in which seven rainbow colours are equally spread over an area, which on rotation, fades to white colour is called _______.
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Solution
The correct option is D Newton’s disc
Newton's disc is a disc with sectors which are painted in rainbow colours, i.e. violet, indigo, blue, green, yellow, orange and red, in that order. When the disc is rotated, the colours fade to white.
Isaac Newton used this disc to demonstrate that white light is a combination of the seven different colours found in a rainbow.
Newton's disc is a disc with sectors which are painted in rainbow colours, i.e. violet, indigo, blue, green, yellow, orange and red, in that order. When the disc is rotated, the colours fade to white.
Isaac Newton used this disc to demonstrate that white light is a combination of the seven different colours found in a rainbow.
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A disc in which seven rainbow colours equally spread over an area, which on rotation, fades to white colour is called:
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