Question : Persons suffering from myopia are advised to use
Option 1: Convex lens
Option 2: Concave lens
Option 3: Plano-convex lens
Option 4: Plano-concave lens
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Correct Answer: Concave lens
Solution : The correct answer is the Concave lens.
Myopia is a medical condition in which a person can see nearby objects clearly, but distant objects appear blurred. It is also known as nearsightedness. It happens when the eyeball becomes too long or oval-shaped, because of which the image is formed before the retina. It can be corrected using a concave lens.
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Question : In the Golgi apparatus, the maturing face is:
Option 1: Spherical
Option 2: Convex
Option 3: Bi-concave
Option 4: Concave
Question : The side mirrors of vehicles are of which type?
Option 1: Convex
Option 2: Concave
Option 3: Plane
Option 4: Inverted
Question : If objects appear enlarged and inverted in a rear-view mirror, then which type of mirror is used?
Option 1: Concave
Option 3: Cylindrical
Option 4: Plane
Question : DOTS is a treatment given to patients suffering from
Option 1: Polio
Option 2: AIDS
Option 3: Hepatitis
Option 4: Tuberculosis
Question : As per the 2011 Census, what is the population density of India?
Option 1: 482 persons/km²
Option 2: 328 persons/km²
Option 3: 382 persons/km²
Option 4: 282 persons/km²
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