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When a beam of white light is passed thr...

When a beam of white light is passed through a prism, it splits to form lights of seven colours. Is it possible to recombine the lights of seven colours to obtain the white light again ? Explain your answer.

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LAKHMIR SINGH & MANJIT KAUR-THE HUMAN EYE AND THE COLOURFUL WORLD -Exercise
  1. Fill in the blanks with suitable words : (a) When a ray of light ent...

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  2. (i) A ray of white light breaks up into its components while passing t...

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  3. When a beam of white light is passed through a prism, it splits to for...

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  4. (a) What is spectrum ? What is the name of glass shape used to produce...

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  5. What is meant by dispersion of white light ? Describe the formation of...

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  6. Draw a diagram to show how white light can be dispersed into a spectru...

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  7. Make two diagrams to explain refraction and dispersion.

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  8. Describe how you could demonstrate that white light is composed of a n...

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  9. How could you show that the colours of the spectrum combine to give wh...

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  10. How is refracted most by a prism : red light or violet light ? Explain...

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  11. A beam of white light is shone onto a glass prism. The light cannot be...

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  12. A beam of white light falls on a glass prism. The colour of light whic...

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  13. The colour of white light which suffers the maximum bending (or maximu...

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  14. Which of the following colour of white light is least deviated by the ...

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  15. The colour of white light which is deviated the maximum on passing thr...

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  16. The splitting up of white light into seven colours on passing through ...

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  17. The coloured light having the maximum speed in glass prism is :

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  18. Which of the following colour of white light has the least wavelength ...

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  19. Which colour of the light has the longest wavelength?

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  20. Why do you not see a spectrum of colours when light passes through a f...

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