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Question
Have a look at the posture of this woman who is reading a book and answer the questions which follow:
What kind of looking glasses she needs?
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Solution
Looking glasses with the concave lens are required here.
RELATED QUESTIONS
What is the other name for
myopia
Your friend can read a book perfectly well but cannot read the writing on blackboard unless she sits on the front row in class.
What type of lenses-converging or diverging-would an optician prescribe for her?
A student sitting in the last row of the class-room is not able to read clearly the writing on the blackboard.
How can this defect by corrected?
Explain with the help of labelled ray-diagram, the defect of vision called hypermetropia, and hot it is corrected by a lens.
What is long-sightedness? State the two causes of long-sightedness (or hypermetropia). With the help of ray diagrams, show:
(i) the eye-defect long-sightedness.
(ii) correction of long-sightedness by using a lens.
A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called:
(a) cataract
(b) hypermetropia
(c) myopia
(d) presbyopia
Give Technical Term:
The type of lens used to correct myopia is
Nearsightedness: elongated eyeball : : farsightedness: _______
What are the causes of ‘Myopia’?
