Question

Why rainbow has seven colours?​

Answer 1

Answer:

Rainbows appear in seven colors because water droplets break sunlight into the seven colors of the spectrum. You get the same result when sunlight passes through a prism. ... The rainbow effect occurs because the light is then reflected inside the droplet and finally refracted out again into the air.

Answer 2

Answer:

Because the sunlight passes through the droplets

Explanation:

Rainbows appear in seven colors because water droplets break white light or sunlight into the seven colors of the spectrum. You get the same result when sunlight passes through a prism. The water droplets in the atmosphere act as prisms and make a seven-color rainbow after the rain.