Question
Physics Question on Ray optics and optical instruments
A normal human eye can clearly see all the objects beyond a certain minimum distance. The human eye has the capacity to suitably adjust the focal length of its lens to a certain extent.
If both Assertion and Reason are true and the Reason is a correct explanation of the Assertion
If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion
If Assertion is true but the Reason is false
If both Assertion and Reason are false
If both Assertion and Reason are true but Reason is not a correct explanation of the Assertion
Solution
The human eye has the capacity to suitably adjust the focal length of the eye and is done with the help of the cilliary muscles. These muscles get relaxed when we see an object at a distance. And they get strained when we view close by. But these muscles cannot get strained more than a certain limit and that?? why we cannot see an object clearer if it is closer than a certain minimum distance from the eye known as the ??east distance for clear vision??