Question

When the Newton’s disc is rotated what happens:
A) The colours fade to white
B) The colours fade to black
C) The colours fade to red
D) The colours fade to blue

Answer 1

Hint: Newton’s Disc is also called the disappearing colour disc, it is a well understood physics experiment, in this experiment the disc has seven colours and the disc is rotated very fast. The rotation of the disc will bring out a certain type of colour.

Complete answer:
Below is a picture of Newton’s Disc, as we can see that it has seven colours which are blue, violet, red, green, light blue, yellow and orange. When we rotate this disc at a very fast rate we would notice that all the colours get mixed up.

These colours together form a single colour or the colours start to fade and when we rotate this disc at a very high rate these colours seemingly merge and give out one single colour which is white in colour.

Option A is correct, Therefore, when the Newton’s disc is rotated the colours fade to white colour.

Note: This was a famous experiment, this experiment was conducted to prove that white light consists of seven colours. A similar experiment was conducted in which the light which is the sun light is allowed to pass through a prism, the prism separated the white light into seven colours of a rainbow, this was known as dispersion of light into seven colours.