Question

How could we split white light into its constituent colours?

Answer 1

A glass prism can be used to show the splitting of white light into its constituent colours. A prism is an optical device with two refracting surfaces. When white light such as sunlight passes through a prism, it splits the light into a band of colours called spectrum. This spectrum can be seen on a screen placed in front of the prism. The spectrum consists of colours which are visible to the human eye namely violet, indigo, blue, green, yellow, orange and red (VIBGYOR).