1.

How does the image formed on retina help us to perceive the object without change in its shape, size and colour?

Answer»
  • The eye lens forms a real and inverted image of an object on the retina. 
  • This retina is a delicate membrane, which contains large number of receptors (125 million) called ‘rods’ and ‘cones’. 
  • They receive the light signals and identify the colour, and the intensity of light. 
  • These signals are transmitted to the brain through optic-nerve fibres.
  • The brain interprets these signals and finally processes the information so that we perceive the object in terms of its shape, size and colour.


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