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What is the approximate horizontal separation between the two human eyes that gives rise to retinal disparity?
AAbout 2.0 centimetres between the two eyes
BAbout 6.5 centimetres between the two eyes
CAbout 12 centimetres between the two eyes
DAbout 0.5 centimetres between the two eyes
Answer & Solution
Correct answer: B. About 6.5 centimetres between the two eyes
1. The chapter explains why the two eyes form slightly different images of the same object.
2. It attributes this to the horizontal separation between the eyes inside the skull.
3. The text states that the eyes are separated by a distance of about 6.5 centimetres.
4. Hence the correct horizontal eye separation is roughly 6.5 cm.
_Source: NCERT Class 11 Psychology Ch 4 "Sensory, Attentional and Perceptual Processes", p. 72, Binocular Cues_
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