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Q.
The part of an eye which acts like diaphragm of a
photographic camera, is
Neural Control and Coordination
Solution:
Iris is a thin, circular structure in the eye, responsible
for controlling the diameter and size of the pupil and thus
the amount of light reaching the retina. The colour of the
iris gives the eye its colour. In optical terms, the pupil is
the eye's aperture and the iris is the diaphragm that serves
as the aperture stop