Topics: Limitation of Senses Quiz
A person has vision defect and corrected by cylindrical lens. Which of the following causes him to have such vision defect?
A. Eyeball is too long
B. Eye lens is too thin
C. Cornea is not spherical
D. All of the above
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Which type of lens is used for the spectacles shown?
A. Concave lens
B. Convex lens
C. Cylindrical lens
D. None of the above