Question

Focal length of the conacve lens used for correcting myopia should be

• A. $25cm$
• B. $<25cm$
• C. less than the distance of far point from the eye
• D. equal to the distance of far point from the eye

Answer 1

The correct option is D

equal to the distance of far point from the eye

Explanation

1. Myopia is also known as nearsightedness in which we cannot see distant objects clearly.
2. To correct the vision of eyes the lens of focal length equal to the far point should be used.
3. Focal length of the concave lens used for correcting myopia should be equal to the distance of a far point from the eye.

Hence, the correct answer is an option (d)