Advertisements
Advertisements
प्रश्न
Study the following diagram carefully and then answer the questions that follow. The diagram is depicting a defect of the human eye :

(i) Identify the defect shown in the diagram.
(ii) Give two possible reasons for the above defect.
Advertisements
उत्तर
(i) Farsightedness or hypermetropia.
(ii)
(a) The lens is flattened or less convex,
(b) Eyeball is short.
APPEARS IN
संबंधित प्रश्न
Explain two possible reasons of myopia. How can it be corrected? Explain with a suitable diagram.
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 young man has to hold a book at arm's length to be able to read it clearly. The defect of vision is:
(a) astigmatism
(b) myopia
(c) presbyopia
(d) hypermetropia
Differentiate between members of the following pair with reference to what is asked in the bracket.
Rods and cones (sensitivity).
What is meant by optical illusion? Give one example.
Describe the mechanism of focusing the image of a distant object in your eye when you raise your head after reading a book.
Name the following:
The defect of the human eye caused due to the uneven surface of the cornea.
Which of the following statement is correct?
Which of the following statement is correct?
