Perception of size by human eye depends upon factor of a light and color in human field of view b color and height in human field of view c a. Size and height in human field of view d size and color in human field of view
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Perception of size by human eye depends upon factor
Ans ;- a). light and comor in human field of view.
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Answer: correct option is A which is light and color in the human field of view
Explanation:
Perhaps the most important factor for the perception size of eye is the angle of view that an object subtends on the retina. All other things being equal, an object that subtends a larger angle of view will appear larger. If you've already clicked on the angle of view above, you know that the angle of view depends on two factors.
- 1. The actual size of the object and
- 2. the distance of the object from the eye.
Another factor affecting perceived size is size constancy. This phenomenon causes objects of known size to tend to appear a constant size regardless of their distance. So, for example, if you're looking at your friend and that friend starts to move away from you, the friend doesn't start shrinking at the same time, even though the angle of view that that friend occupies keeps shrinking.
Actually, I made a small mistake in the above statement. Size constancy does not mean that perceived size remains constant regardless of distance. If the distance is large enough familiar objects will appear smaller.
Another factor that can affect perceived size is perspective. One of the situations where this can be experienced is in a tunnel. The bricks lining the tunnel walls will subtend smaller and smaller viewing angles the farther they are from your eye.
If you've already clicked on the word perspective, you've noticed that when objects of constant size are placed in an environment with strong perspective cues, those objects can appear larger at greater distances.
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