Class 10ScienceThe Human Eye and the Colourful WorldMix Examples - The Human Eye and the Colourful World
MediumWith the help of a diagram,explain the formation of a rainbow in the sky.
(N/A) rainbow is a natural spectrum appearing in the sky after a rainfall. It is caused by the dispersion of sunlight by tiny water droplets present in the atmosphere.
$1$. When sunlight enters a water droplet,it undergoes refraction and dispersion.
$2$. The light then undergoes internal reflection inside the droplet.
$3$. Finally,the light undergoes refraction again as it exits the droplet.
Due to these phenomena (refraction,dispersion,and internal reflection),different colours reach the observer's eye at different angles,resulting in the formation of a rainbow. The observer must always have their back towards the Sun to see a rainbow.
$1$. When sunlight enters a water droplet,it undergoes refraction and dispersion.
$2$. The light then undergoes internal reflection inside the droplet.
$3$. Finally,the light undergoes refraction again as it exits the droplet.
Due to these phenomena (refraction,dispersion,and internal reflection),different colours reach the observer's eye at different angles,resulting in the formation of a rainbow. The observer must always have their back towards the Sun to see a rainbow.
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