Question

The image distance from the eye lens in the normal eye when we increase
the distance of an object from the eye
(A)
increases
(B)
decreases
(C)
remains unchanged.
(D)
depends on the size of the eyeball.​

Answer 1

When the distance of an object from the eye increases, then the image distance from the eye lens in a normal eye:

(C) remains unchanged

• The reason for this is that the size of the eye can change, so the image distance remains fixed.

• This is because due to the power of accommodation of the eye, the focal length of the eye lens compensates for the increase in object distance.

• Thus the image distance remains fixed and the formation of the image is on the retina of the eye.

Answer 2

The image distance from the eye lens in the normal eye when we increase  the distance of an object from the eye Remains unchanged.

Option (C) is correct.

Explanation:

• The image distance from the eye lens in the normal eye when we increase
• the distance of an object from the eye Remains unchanged.
• The reason is that when we increase the distance of an object from the eye there is no change to the image distance in the eye.
• Eyes has the ability of accommodation, therefore to see closer or distant objects clearly we can increase or decrease focal length of its lens.
• Thus the image is always formed at retina.