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ZEN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-ZEN ADDITIONAL QUESTIONS SECTION - SHORT ANSWER TYPE QUESTIONS - I
- Explain the changes taking place in the cilary muscles when we focus o...
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- How do the iris and pupil respond to (i) dim and (ii) bright light ?
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- Name the screen on which an image is formed in the eye. What is the ra...
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- How can change of size of eyeball be one of the reason for (i) myopia ...
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- Explain giving reason the type of lens used to correct the defect of v...
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- Name the part of eye where the image is formed in a nornaml human eye....
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- What is hypermetropia or far-sightedness ? Name the type of lens used ...
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- What is presbyopia ? Write two causes of this defect.
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- What are bifocal lenses ? Who needs to use them ?
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- A person is able to see objects clearly only when these are lying at a...
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- What is dispersion ? What happens when light is passed through a glass...
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- A beam of white light falling a glass prism split up into seven colour...
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- List the three phenomena of light responsible for the formation of rai...
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- A beam of light consisting of red, blue, and yellow colours is inciden...
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- When a beam of white light is passed through a triangular glass prism,...
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- Name the phenomenon responsible for (i) advance of sunrise (ii) colour...
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- A star sometimes brighter and at other times fainter. What is this eff...
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- Why do we see a rainbow in the ske only after rainfall ?
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- Mention any four phenomena that can be observed due to atmospheric ref...
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- What is the difference in colours of the sun observed during sunrise/s...
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