With the help of a diagram, explain the formation of a rainbow in the sky.
With the help of a diagram, explain the formation of a rainbow in the sky.
Solution
The water droplets in the atmosphere act like small prisms. These droplets refract and disperse the incident sunlight, then reflect it internally and finally refract it again when it comes out of the rain drop. Due to distortion of sunlight and internally reflection, different colours reach to the observer.
