Question

What is a newton's disc? how does it show that light is composed of many colours

Answer 1

Answer:

He explained it by showing light ray passed in the prism and this says about vibgyor sceptrum

Answer 2

Answer:

A Newton disc is a disc with segments in rainbow colours. When the disc is rotated, the colors fade to white; In this way Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow.

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Explanation: