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- Is focal length of eye lens fixed? If not, why?
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- What is the function of ciliary muscles in human eye? What ability do ...
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- What is the function of rod cells on the retina? Which cells detect co...
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- What are cones? What problem occurs if they don't work properly?
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- What is basic cause of colour blindness?
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- Why cats and bats are able to see at night?
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- At what rate the images pass one after the other on a cinema screen?
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- What is retina? What type of photosensitive cells are present on the r...
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- Name one device that can be used by short statured person to see over ...
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- Find out the letters of English alphabet or any other language known t...
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- Distinguish between luminous and non-luminous bodies.
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- How do we see objects?
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- Give the conditions necessary for seeing an object.
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- What is the virtual image ? Give one situation where a virtual image i...
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- What do you understand by lateral inversion?
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- State the laws of reflection of light.
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- What is diffused reflection and regular reflection? Give examples.
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- What do you understand by reflection of light?
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- Define Reflected Ray
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- Define Angle of reflection
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