Rainbow is formed due to.............
Show Hint
The light rays are refracted into the water droplet and display total internal reflection and disperse to show the colors.
- refraction
- dispersion and total internal reflection
- total internal reflection
- scattering
The Correct Option is B
Solution and Explanation
The rainbow is an example of the dispersion of sunlight by the water droplets in the atmosphere. A Rainbow is a beautiful phenomenon that occurs due to a combination of the refraction of sunlight by spherical droplets of water and of internal (not total) reflection.
- The dispersion of light is the splitting of light into its constituent colors.
- Total internal reflection is when the ray of light travels in a denser medium towards the rare medium and gets reflected back inside the initial medium.
As the light shows Total internal reflection and dispersion by splitting into the colors in the rainbow. Therefore, option B is the correct answer.
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Concepts Used:
Ray Optics and Optical Instruments
Optics, deals with the determination of behaviour and the properties of light, along with its interactions with the matter and also with the instruments that are used to detect it.
Ray optics is also known as the geometrical optics and it is a branch of science which describes light propagation.
Reflection is the change in direction of light at an interface in-between two different media so that the wave-front returns into a medium from which it was originated.
Speed of light is the rate at which the light travels in free space.
A phenomenal change in image formed when the light is passed from one medium to another which is called Refraction.
Total Internal Reflection is the reflection of light when the light ray enters into a rarer medium from a denser medium and the angle of incidence is higher than the critical angle of incidence then that light ray will be reflected back to the denser medium.
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