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Question

When the intensity of light is low during night, the light is detected by

A
Rods
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B
Cones
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C
Lens
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D
Both rods and cones
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Solution

The correct option is B Rods
Cones are the secondary photoreceptors that are stimulated by bright light and are responsible for color perception. Rods are the light sensitive cells that lack colour discrimination but are repolarized by dim light and are responsible for night vision. Lens is the membrane-like structure that is found in the eye behind the iris and serves to bring the objects into focus. The correct answer is A.

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