Question

Explain the activity for the formation of artificial rainbow​

Answer 1

Answer:

Take a tray and fill with water. Place a mirror in water such that it makes an angle with water surface. Now focus white light on the mirror through the water. ... The splitting of white light into different colours (VIBGYOR) is called dispersion

Answer 2

Activity - II:

Take a tray and fill with water.

Place a mirror in water such that it makes an angle with water surface.

Now focus white light on the mirror through the water.

Keep a white card board sheet above the water surface.

We may observe the colours VIBGYOR on the board.

The splitting of white light into different colours (VIBGYOR) is called dispersion.

So consider a white light is a collection of waves with different wavelengths.

Violet has shortest wavelength and red has longest wavelength.