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How do we perceive different colours?...

How do we perceive different colours?

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(i) The retina in our eyes is made up of many light sensitive cells.
(ii) These cells are shaped like a rod and like a cone.
(iii) The rod like cells respond to the intensity of light and give information about the brightness or dimness of the object to the brain.
(iv) The conical cells respond to the colour and give information about the colour of the object to the brain.
(v) Brain processes all the information received and we see the actual image of the object.
(vi) Thus conical cells are responsible for perceiving different colours.
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