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Questions and Answers
What is the range of wavelengths for visible light in the spectrum?
What is the range of wavelengths for visible light in the spectrum?
- 200nm to 500nm
- 500nm to 800nm
- 400nm to 700nm (correct)
- 300nm to 600nm
What type of cells are adapted for sensing coloured vision in the human retina?
What type of cells are adapted for sensing coloured vision in the human retina?
- Ganglion cells
- Cone cells (correct)
- Rod cells
- Bipolar cells
Where are the light rays focused by the lens in the eye?
Where are the light rays focused by the lens in the eye?
- Aqueous humour
- Retina (correct)
- Cornea
- Vitreous humour
How many rod cells are present in the human retina?
How many rod cells are present in the human retina?
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Where are the impulses initiated in the retina conducted to?
Where are the impulses initiated in the retina conducted to?
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Study Notes
Visible Light and Vision
- The range of wavelengths for visible light in the spectrum is between approximately 400-700 nanometers (nm).
- The cells adapted for sensing coloured vision in the human retina are Cone cells.
Structure and Function of the Eye
- Light rays are focused by the lens in the eye onto the Retina.
- The human retina contains approximately 120 million Rod cells.
- The impulses initiated in the retina are conducted to the Optic Nerve.
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