Light sensitive cells on gets activated whenever light falls on it and generate signals.

iris

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thermal

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retina

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electrical

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Solution

The correct options are
C retina
D electrical
When light from an external source forms an image on retina, the image is transferred to brain through optic nerves in the form of electrical signals. The brain interprets these signals and processes it so that we perceive objects as they are.

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The light-sensitive cells found on the retina are known as:

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