Which one of the following statements is not correct ?

Which one of the following statements is not correct ?

Human eye is a refracting system containing a diverging lens.
The retina of the human eye contains millions of light sensitive cells, called rods and cones, which convert the light into electrical messages.
Every image that is focused on the retina is upside down.
We need both eyes to judge the relative positions of objects accurately.
This question was previously asked in
UPSC NDA-2 – 2017
The correct answer is A.
Statement A is incorrect because the human eye contains a converging lens (convex lens), not a diverging lens, which focuses light onto the retina.
Statement B is correct as the retina has photoreceptor cells (rods and cones) that convert light into electrical signals. Statement C is correct; the image formed on the retina is real and inverted. Statement D is correct; binocular vision allows for depth perception and accurate judgment of relative positions.
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