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Earn 100

What do you understand by presbyopia and astigmatism?
Important Questions on The Human Eye and the Colourful World
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A short sighted person uses a spectacle of power to see very distant objects. How far can he see without using spectacle?

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A student sitting on the last bench of a regular classroom is able to see the written work on a blackboard but unable to read from his textbook. Identify the type of defect of vision he is suffering from. What kind of lens should he wear to correct the defect?

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Which defect of the eye is shown in the figure given below?

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In the given diagram which defect of the human eye is being corrected using a concave lens?

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