Tag: light and the formation of shadows

When newton's colour disc is rotated at high speed it appears white.

Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.
When the disc is rotated, the colours fade to white. In this way, Sir Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow.

Hence, the correct answer is OPTION A.

The sequence of colours obtained on splitting of white light is VIBGYOR- Violet, indigo, blue, green, yellow, orange and red.

Isaac Newton was the first person to split sunlight into seven colors using a glass prism. When he tried to split the band of colors further using a second prism placed in the inverted position as compared to that of the first, he observed that the emergent ray was white colored. This gave him an idea that sunlight is made up of 7 colors and any other light that gives a spectrum similar to that of sunlight is often referred to as white light.

Visible range consists of seven different colours i.e, VIBGYOR. The band of these seven colours is known as spectrum.

Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.

Hence, the correct answer is OPTION B. 

Monochrome means single colour. The light of one single colour is monochromatic. White light have seven colours. So it is polychromatic.

Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.

Hence, the correct answer is OPTION A. 

As per VIBGYOR we have :Violet, Indigo, Blue, Green, Yellow, Orange and Red colour in rainbow.

Due to persistence of vision the combination of red, green and blue forms the same white color.