A) 25 cm and infinite
B) 50 cm and 100 cm
C) 25 cm and 50 cm
D) 0 cm and 25 cm
Correct Answer: A
Solution :
Our eye lens has a power to adjust its focal length to see the nearer and farther objects, This process of adjusting focal length is called accommodation. However if the object is brought too close or bring too far from the eye, the focal length cannot be adjusted to form the image on the retina. Thus, there is minimum or maximum distance for the clear vision of an object. For a normal eye, near point or least distant vision D = 25 cm and far point \[=\infty \].
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