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प्रश्न
Draw a neat labeled diagram to show how hypermetropia can be rectified.
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उत्तर
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संबंधित प्रश्न
What is the other name for
myopia
Name one defect of vision (or eye) which cannot be corrected by any type of spectacle lenses.
Explain with the help of labelled ray-diagram, the defect of vision called hypermetropia, and hot it is corrected by a lens.
What is short-sightedness? State the two causes of short-sightedness (or myopia). With the help of ray diagrams, show:
(i) the eye-defect short-sightedness.
(ii) correction of short-sightedness by using a lens.
To read a book held at a distance of 25 cm, will she need converging or diverging spectacle lenses?
State the main functions of the following:
Tears
Choose the correct answer :
Presbyopia is a disease of _____________
Differentiate between:
Short-sightedness and Long-sightedness.
Draw ray diagram showing myopic eye.
A student sitting at the back of the classroom cannot read clearly the letters written on the blackboard. What advice will a doctor give to her? Draw ray diagram for the correction of this defect.
