It is formed due to dispersion of sunlight through water droplets. Water droplets act as small prism through which sunlight enters it refracts and disperses and then gets reflected internally which creates a rainbow in the sky which is seen to observer's eye.
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12th
Physics
Ray Optics and Optical Instruments
Dispersion
Explain the formation of ra...
PHYSICS
Explain the formation of rainbow.
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A rainbow is a natural spectrum of sunlight in the form of bows appearing in the sky when the sun shines on rain drops.
It is combined result of reflection, refraction and dispersion of sunlight from water droplets, in atmosphere.
Always it formed in the direction opposite to the sun.
To see a rainbow, the sun must be behind us and the water droplets falling in front of us.
When a sunlight enters into a spherical rain drop, it is refracted and dispersed. The different colours of light bent in different angles.
When different colours of light fall on the back inner surface of drop, it (water drop) reflects (different colours of light) internally (total internal reflection).
The water drops again refracts the different colours, when it comes out from the raindrop.
After leaving this different colours from the raindrop as rainbow, reach our eye. Thus, we see a rainbow.
Answers & Comments
Answer:
Formation of rainbow
Explanation:
It is formed due to dispersion of sunlight through water droplets. Water droplets act as small prism through which sunlight enters it refracts and disperses and then gets reflected internally which creates a rainbow in the sky which is seen to observer's eye.
----------------
answr
search
What would you like to ask?
12th
Physics
Ray Optics and Optical Instruments
Dispersion
Explain the formation of ra...
PHYSICS
Explain the formation of rainbow.
MEDIUM
Share
Study later
ANSWER
A rainbow is a natural spectrum of sunlight in the form of bows appearing in the sky when the sun shines on rain drops.
It is combined result of reflection, refraction and dispersion of sunlight from water droplets, in atmosphere.
Always it formed in the direction opposite to the sun.
To see a rainbow, the sun must be behind us and the water droplets falling in front of us.
When a sunlight enters into a spherical rain drop, it is refracted and dispersed. The different colours of light bent in different angles.
When different colours of light fall on the back inner surface of drop, it (water drop) reflects (different colours of light) internally (total internal reflection).
The water drops again refracts the different colours, when it comes out from the raindrop.
After leaving this different colours from the raindrop as rainbow, reach our eye. Thus, we see a rainbow.