Question

Take a round piece of card board of 10 cm diameter. Divide the card board in 7 equal parts.
Paint each piece of card board with the color of a rainbow. Make a hole at the centre and put
pencil inside it and make a spin. Share your experience.​

Answer 1

Answer:

Take a round piece of card board of 10 cm diameter. Divide the card board in 7 equal parts.

Paint each piece of card board with the color of a rainbow. Make a hole at the centre and put

pencil inside it and make a spin. Share your experience.

Explanation:

Take a round piece of card board of 10 cm diameter. Divide the card board in 7 equal parts.

Paint each piece of card board with the color of a rainbow. Make a hole at the centre and put

• pencil inside it and make a spin. Share your experience. tudjdndjdndndnddhdb

Answer 2

The observation will be as follows -

• When the disk is at rest we will be able to clearly identify each of the seven colours in the 7 segments of the disk.
• But, when we will rotate the disk, the disk will appear as white in colour.
• This happens because the blend of the 7 colours of rainbow is actually white colour. When the disc rotates in a fast speed, the colour in a particular spot gets overlapped by other six colours in fraction of seconds and that's why our brain visualises the whole thing as the blend of 7 colours or white colour.
• This helps to gain a conclusion that white light is a mixture of seven colours of rainbow.