Home › Tamil Nadu SSLC (Class 10) › Physics › Optics › The ability of the eye lens to focus on both nea…
The ability of the eye lens to focus on both nearby and distant objects by changing its focal length is known as what?
ALeast distance of distinct vision
BPower of accommodation
CPower of a lens
DPersistence of vision
Answer & Solution
Correct answer: B. Power of accommodation
1. The eye lens adjusts its focal length using the ciliary muscles.
2. This adjustment lets it focus near and far objects on the retina.
3. That capability is called the power of accommodation.
4. Persistence of vision relates to retaining images briefly, not focusing, so it is wrong.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 2 Optics "Human Eye", p.31_
Related questions
In a compound microscope, the lens placed near the object has which property compared withFor correcting myopia, a concave lens is used. According to the convention for lens power,For a hypermetropic person, the near point has shifted to 1.5 m. Using $f = \dfrac{dD}{d-DA myopic person can clearly see objects only up to 4 m and wants to see objects up to 20 mThe eye defect presbyopia, in which a person loses the power of accommodation for both neaIn a myopic (short-sighted) eye, where is the image of a distant object formed relative toTwo thin lenses of powers $+5\ \text{D}$ and $-2\ \text{D}$ are placed in contact. What isThe power of a lens is $-4\ \text{D}$. What is its focal length?