Question

Explain the formation of a rainbow

Answer 1

$\huge \purple A \purple N \purple s \purple W \purple e \purple \R :-$

• A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun

Answer 2

Explanation:

AIM:

To explain for the formation of artificial rainbow.

Apparatus:

Mirror , water, tray, white light

Procedure:

1. Take a tray and fill with water.

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

surface.

3. Now focus white light on the mirror through the water.

4. Keep a white cardboard sheet above the water surface.

Observation:

The white colour splits into seven colors VIBGYOR on the board.

Result:

The splitting of white light into different colors (VIBGYOR) is called

dispersion. So a white light is a collection of waves with different

wavelengths. Violet has the shortest wavelength and red has the

longest wavelength.