NCERT Solution Class X Science Human Eye and Colourful World Question 8 (Ex 11.2)

Question 8:

What happens to the image distance in the eye when we increase the distance of

an object from the eye?

Answer:

Since the size of eyes cannot increase or decrease, the image distance remains

constant.

When we increase the distance of an object from the eye, the image distance in

the eye does not change. The increase in the object distance is compensated by

the change in the focal length of the eye lens. The focal length of the eyes changes

in such a way that the image is always formed at the retina of the eye.

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