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Question

What is the ability of the eye lens to adjust its focal length called?

This question was previously asked in
RRB Group D 2025 Question Paper (18-Aug-2026) (Shift 1)
The correct answer is

Power of Accommodation

The human eye contains a flexible, transparent lens whose curvature can be adjusted by the ciliary muscles to focus objects at varying distances onto the retina.

This ability of the eye lens to change its focal length so that both near and distant objects can be clearly seen is called the power of accommodation.

Myopia is a defect of vision, persistence of vision refers to the retina retaining an image briefly after the source is removed, and refraction is simply the bending of light, none of which describe this adjusting ability.

Hence, the ability of the eye lens to adjust its focal length is called the power of accommodation.

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