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A teacher explains the structure and functioning of human eye by invoking the analogy of a camera which the students are already familiar with. In whi
Question

A teacher explains the structure and functioning of human eye by invoking the analogy of a camera which the students are already familiar with. In which of the following aspects does this analogy not hold ?

A.

The eye forms an erect image whereas the camera forms an inverted image

B.

The camera has a concave lens whereas the eye has a convex lens

C.

The eye sees in three dimensions & while a camera sees in two dimensions

D.

The focal length of a human eye is fixed and cannot be adjusted even slightly

Correct option is C

The correct answer is (c) the eye sees in three dimensions and while a camera sees in two dimensions.
• Both the eye and the camera have lenses that focus light onto a light-sensitive surface. The light-sensitive surface in the eye is called the retina, and it converts light into electrical signals that are sent to the brain. The brain interprets these signals and creates the image that we see.
• The eye can see in three dimensions because it has two retinas, one in each eye. The two retinas are slightly offset from each other, which allows the brain to calculate the depth of objects.
• On the other hand, cameras only have one light-sensitive surface, so they can only see in two dimensions.

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