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Describe the formation of a rainbow in t...

Describe the formation of a rainbow in the sky with the help of a diagram.

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Immediately after rain, the ater droplets in the atmosphere act like small prisms and they refract, dispere, and internally reflect the sunlight falling on them as shown in the figure. Thus, a beautiful spectrum of sunlight is seen in the sky known as rainbow. An observer standing with his back towards the sun observes the rainbow in the form of concentric circular arcs of different colours in the horizon.
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ZEN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-ZEN ADDITIONAL QUESTIONS SECTION - SHORT ANSWER TYPE QUESTIONS - II
  1. Describe an activity to show refraction of light through a prism. Draw...

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  2. Draw a ray diagram to show the path of light that enters the glass pri...

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  3. Describe the formation of a rainbow in the sky with the help of a diag...

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  4. Why do different colours get separated when a white light passes throu...

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  5. Explain the experiment conducted by Newton to show that white light co...

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  6. With the help of a labelled diagram. Explain why the sun appears reddi...

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  7. Draw a labelled diagram of the human eye. What is the significance of ...

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  8. Draw ray diagrams showing (i) myopia eye and (ii) hypermetropia eye.

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  9. A person cannot see objects further than 10 metres from the eye clearl...

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  10. List two main causes of a person developing near-sightedness. Show wit...

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  11. Study the diagram and answer the questions the follow it : (i) Which...

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  12. A narrow beam PQ of white light is passing through a glass prism ABC a...

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  13. When light passes through a prism, seven colours namely VIBGYOR are se...

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  14. What is disperson of white light ? State its cause. Draw a ray diagr...

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  15. Describe an activity to show refraction of light through a prism. Draw...

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  16. Draw a ray diagram to show the path of light that enters the glass pri...

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  17. Describe the formation of a rainbow in the sky with the help of a diag...

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  18. Why do different colours get separated when a white light passes throu...

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  19. Explain the experiment conducted by Newton to show that white light co...

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  20. With the help of a labelled diagram. Explain why the sun appears reddi...

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