Myopia and Its Correction

Q. Statement1: Myopia is corrected by the use of the concave lens.
Statement 2: A concave lens forms a virtual image of the object kept at infinity at its focus. Therefore the image formed by concave lies within the far point of the myopic eye, which then acts as the object for the myopic eye thus helping it view it.

1. Both statements are wrong.
2. Statement 1 is correct but statement 2 is incorrect.
3. Statement 1 and 2 are correct but statement 2 is not the reason for statement 1.
4. Statement 1 and 2 are correct and statement 2 is the correct reason for statement 1.

Q.

Which defect is depicted in the image?

1. Myopia
2. Hypermetropia
3. Presbyopia
4. Astigmatism

Q. A person wears a pair of spectacles with a concave lens of power -2D. Find the farthest point to which he can see objects distinctly without his spectacles.

1. 25 cm
2. 30 cm
3. 50 cm
4. 20 cm

Q.

The far point of a myopic eye is 20 cm . Find the power of his lens used.

1. 3D

2. -3D

3. 5D

4. -5D

Q.

Which one is Nearsightedness?

A. Myopia

B. Hypermetropia

C. Astigmatism

D. None of these

1. B

2. C

3. D

4. A

Q.

If a person cannot see objects beyond 40 m clearly then what kind of corrective lenses he requires?

1. Concave lens

2. Convex lens

3. Cylindrical lenses

4. Plano convex lens

Q.

A person with a myopia can see near by objects clearly but cannot see distant object distinctly.

1. True

2. False

Q.

If in a human eye parallel rays after getting refracted from the lens intersect at a point before the retina then what kind of defect is the person suffering from?

1. myopia

2. hypermetropia

3. presbyopia

4. cataract

Q.

Statement 1: Myopia is corrected by the use of concave lens.

Statement 2: A concave lens diverges the light coming from the object kept at infinity and makes it appear to be within the far point of myopic eye, which then acts as the object for the myopic eye thus helping to view it.

1. Statement 1 and 2 are correct but statement 2 is not the reason of statement 1.

2. Statement 1 and 2 are correct and statement 2 is the correct reason for statement 1.

3. Statement 2 is correct but statement 1 is incorrect.

4. Statement 1 is correct but statement 2 is incorrect.

Q.

A person who can see nearby objects clearly, but cannot see distant objects distinctly is said to be suffering from

1. hypermetropia

2. myopia

3. near sightedness

4. both a and c