Question

Assertion (A): Myopia is caused due to the shortening of the eyeball from front to back. 

Reason (R): Myopia can be corrected by using suitable convex (converging) lens and the power of the glasses used is mentioned in plus “+”.

1. A is True and R is False.
2. A is False and R is True.
3. Both A and R are True.
4. Both A and R are False.

विकल्प

• (1)

• (2)

• (3)

• (4)

Answer 1

(4)

Explanation:

Myopia is generally caused when the eyeball becomes elongated from front to back, or when the eye lens has excessive converging power. As a result, the image of a distant object is formed in front of the retina. Therefore, the Assertion (A) is false.

Myopia is corrected using a concave (diverging) lens, not a convex lens. The power of a concave lens is negative (−). Therefore, the Reason (R) is also false.

Hence, both A and R are false.