Difference between primary and secondary rainbow.
Answers
a) Primary rainbow is formed by the rays which undergo one total internal reflection and two times refractions before emerging finally from the water droplets.
Secondary rainbow is formed by the rays which have undergone two total internal reflections and two times refraction before emerging finally from the water droplets.
(b) Primary rainbow is more brighter than the secondary rainbow.
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The Rainbow Effect is a phenomenon where someone viewing a projected image perceives flashes of color around the image.
Light enters a water droplet, slowing down and bending as it goes from air to denser water. The light reflects off the inside of the droplet, separating into its component wavelengths--or colors. When light exits the droplet, it makes a rainbow.