What are the material required to produce a rainbow in your laboratory?

Explanation

1) Take a metal tray and fill with water.
2) Place a mirror in the water such that it makes an angle to the water surface.
3) Now focus white light on the mirror through the water as shown in the figure.
4) Try to obtain colours on a white card board sheet kept above the water surface.
5) We can observe the seven colours of VIBGYOR on the card board sheet.

Activity -5:
1) Select a white coloured wall on which the sun rays fall.
2) Stand in front of a wall in such a way that the sun rays fall on your back.
3) Hold a tube though which water is flowing.
4) Place your finger in the tube to obstruct the flow of water.
5) Water comes out through the small gaps between the tube and your finger like a fountain.
6) Observe the changes on the wall while the water shower is maintained.
7) We observe different colours on the wall, which are similar colours of VIBGYOR.