Why do we see a rainbow in the sky only after rainfall ?

Question

Answer

1)Rainbow is caused by dispersion of sunlight by tiny water droplets, present in the atmosphere.

2)A rainbow is always formed in a direction opposite to that of the Sun. The water droplets act like small prisms.

3) They refract and disperse the incident sunlight, then reflect it internally, and finally refract it again when it comes out of the raindrop.

Answer

-A rainbow is a natural spectrum appearing in the sky after rain shower . It is caused by dispersion of sunlight by tiny water droplets , present in the atmosphere . A rainbow is always formed in a direction opposite to that of the sun.

-Thus, we see rainbow only after rainfall because the water droplets of rain act like small prisms. They refract and disperse the incident sunlight , then refract it internally and finally , refract it again when it comes out of the raindrop.
A rainbow can also be seen on a sunny day by looking at the sky through a waterfall or through a water fountain , with the sun behind you

Answer

It is because rainbow is formed by the reflection of sunlight through the suspended rain drops in air after the rain..these tiny rain droplets act as prism and when light passes through these prism they refract into different colours..

Answer

It's bcs there are lot of water droplets floating in the air after rainfall and those droplets acts as a prism

Answer

Why do we see a rainbow in the sky only after rainfall ?

Rainbows are one of the most beautiful natural phenomena that can be witnessed in the sky. They are formed when sunlight passes through raindrops in the air, creating a spectrum of colors in the sky. But why do we see a rainbow only after rainfall? Let's explore the science behind this question.

What is a rainbow?

A rainbow is a natural phenomenon that occurs when sunlight interacts with water droplets in the air. When sunlight enters a water droplet, it bends, or refracts, and separates into its different colors. This is called dispersion. The different colors of light, or spectrum, then reflect off the inside of the droplet and exit in different directions. When these dispersed colors reach our eyes, we see a beautiful arc of colors in the sky.

Why do we see rainbows after rainfall?

We see rainbows after rainfall because raindrops are necessary for their formation. When it rains, water droplets are suspended in the air, and when sunlight passes through these droplets, it creates a spectrum of colors in the sky. This is why we often see rainbows after a heavy shower or thunderstorm.

What are the conditions required for a rainbow to form?

For a rainbow to form, three conditions must be met:

The sun must be shining

There must be rain in the air

The observer must be positioned between the sun and the raindrops

If these conditions are met, a rainbow will form in the sky.

Conclusion

Rainbows are a beautiful natural phenomenon that we can observe in the sky after rainfall. They are formed when sunlight passes through water droplets in the air, creating a spectrum of colors that we see as an arc in the sky. While rain is necessary for their formation, specific conditions must be met for a rainbow to appear.

Answer

We see a rainbow in the sky only after rainfall because the water droplet Behave like prism and disperse sunlight due to atmosphere refraction and total internal reflection
a rainbow is always formed in the direction opposite to that of the sun . the water droplet act like small prism. They reflect and disperse the incident sunlight, then refract in internally and finally refract it again when it come out of the raindrop

I hope it's helpful for us
thank you😊😊

Answer

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