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How is a Rainbow Formed? Video Lecture - Class 7
FAQs on How is a Rainbow Formed? Video Lecture - Class 7
| 1. How is a rainbow formed? |  |
Ans. A rainbow is formed when sunlight is refracted, or bent, as it passes through raindrops in the air. The sunlight is then reflected inside the raindrop and refracted again as it exits the raindrop, creating the colors we see in a rainbow.
| 2. What are the colors of a rainbow and why are they arranged in a specific order? | |
Ans. The colors of a rainbow are red, orange, yellow, green, blue, indigo, and violet (ROYGBIV). These colors are arranged in a specific order because each color has a different wavelength. When light passes through raindrops, the different wavelengths of light are bent at slightly different angles, causing them to separate and form the distinct colors of the rainbow.
| 3. Can you see a full rainbow from any angle? | |
Ans. No, you cannot see a full rainbow from any angle. A rainbow is actually a full circle, but we typically only see a semicircle because the ground obstructs the lower half. To see a full rainbow, you would need to be above the ground, such as in an airplane or on top of a high mountain.
| 4. Is it possible to touch or reach a rainbow? | |
Ans. No, it is not possible to touch or reach a rainbow. A rainbow is an optical illusion and does not have a physical existence. It is formed by the interaction of light and water droplets in the air, so it cannot be touched or reached.
| 5. Are double rainbows rare? | |
Ans. Double rainbows are relatively rare but not uncommon. They occur when there is a secondary reflection and refraction of sunlight inside the raindrops, creating a fainter and wider secondary rainbow outside the primary rainbow. The colors in a double rainbow are also reversed compared to a primary rainbow.
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