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How are we able to see distant and nearby object clearly? Which part of eye help in changing curvature of lens? Why no image is formed at blind spots?

Posted by Himanshu Pandey 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Khushi 4 years, 11 months ago

This is due to the ability of the eye lens to adjust its focal length which is known as accommodation. When the ciliary muscles are relaxed, the lens becomes thin . Thus, its focal length increases. This enables us to see distant objects clearly. When we are looking at objects closer to the eye, the ciliary muscles contract. This increases the curvature of the eye lens. The eye lens becomes thicker. The focal length of the eye lens decreases. This enables us to see nearly objects clearly. No image is formed at blind spot because it is in the junction of optic nerves and brain so there is no retina.

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Posted by Pandey Ji 6 months, 1 week ago

CBSE > Class 10 > Science