The Human Eye and the Colourful World
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Human Eye credits:openclipart |
(Worksheet)
Fill in the blanks
1. The transparent spherical membrane covering the front of the eye is called ____________.
2. _______ is the surface which acts as screen and image is formed on it.
3. The coloured diaphragm between cornea and lens is known as __________.
4. A small hole in iris which controls the intensity of light entering the eye is called __________.