Question

Function of optic nerve in human eye:

• A. Image is modified by the optic nerves
• B. Electric signals are generated on the retina are carried by the optic nerve to the brain
• C. Image brightness is reduced by the optic nerve
• D. All the above

Answer 1

Answer: (B)

Electric signals are generated on the retina are carried by the optic nerve to the brain

The light sensitive cells of the retina gets activated with the incidence of light and generates electric signals. The electric signals are sent to the brain by the optic nerve and the brain interprets the electric signals in such a way that we see an image which is erect and of the same size as the object.