Question

Define: (i) Power of accomodation
(ii) Persistence of vision
(iii) Near point

For 3 Marks

Answer 1

Answer:

Power of accommodation of human eye: In simple words, we can say as, The ability of the eye to focus objects lying at different distances is called the power of accommodation of the eye.

Persistence of vision traditionally refers to the optical illusion that occurs when visual perception of an object does not cease for some time after the rays of light proceeding from it have ceased to enter the eye.

In visual perception, the near point is the closest point at which an object can be placed and still form a focused image on the retina, within the eye's accommodation range. The other limit to the eye's accommodation range is the far point. A normal eye is considered to have a near point at 25 cm.....

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