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Science
10th
grade
Defects of Vision and Their Correction | Human Eye and the Colourful World | Assessment | English | ...
5 questions
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- 1. Multiple Choice
The near and far point of a human eye are respectively _______ .
infinity and 25 cm
25 cm and infinity
25 cm and 25 cm
infinity and infinity
- 2. Multiple Choice
The far sightedness arises due to which of the following reasons?
The size of eyeball becomes large
The focal length of the lens becomes too long
The lens becomes blurry
Pupil allows more light to enter into the eye
- 3. Multiple Choice
A person can not see distant objects placed beyond 4 m. The defect can be corrected by using the lens of power?
4 D
-4 D
0.25 D
-0.25 D
- 4. Multiple Choice
Which part of eye is replaced in a cataract surgery?
Iris
Cornea
Lens
Retina
- 5. Multiple Choice
An ophthalmologist suggested Anita to wear a lens of 2D. Identify the correct option regarding her defect of vision.
The image of the object is forming behind the retina
The image of the object is forming in front of the retina
The image of the object is forming at the retina
Data insufficient
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