Question

The human eye can focus objects at different distances by adjusting the focal length of the eye-lens. This is due to:; A. presbyopia; B. Accommodation; C. near-sightedness; D. far-sightedness

Answer 1

Answer:

Option B i.e. Accommodation.

Explanation:

The right option for this is option B i.e. "Accommodation".

This is a very important property of human eye. A person can easily see something situated quite near or quite far to him/her by adjusting the focal length of his eye. He accommodates his eye's focal length and hence it is called "accommodation" in  Physics.

On the other hand, the other options are conditions when one cant see things situated nearby, or far off, etc.

Answer 2

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(b) accommodation

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Human eye can change the focal length of the eye lens to see the objects situated at

various distances from the eye.

This is possible due to the power of accommodation of

the eye lens.

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