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    				| 1. | How does the image formed on retina help us to precieve the object without change in its shape, size and colour ? | 
| Answer» Solution :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 millions) 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 fibre. The brain interpretsthese signals and finally PROCESSES the information so that we poercieve the object in terms of its shape,size and colour. | |