A normal eye is not able to see objects closer than \( 25 \mathrm{~cm} \) because a. The eye len...

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A normal eye is not able to see objects closer than \( 25 \mathrm{~cm} \) because
a. The eye lens has the focal length of \( 25 \mathrm{~cm} \)
b. The distance of the retina from the eye-lens is \( 25 \mathrm{~cm} \)
c. The eye is not able to decrease the focal length beyond a limit
d. The eye is not able to decrease the distance between the eye-lens and the retina beyond a limit
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