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Consider the following statements with reference to the human eye:
1. The rod and cone cells receive information in the light that strikes the eye.
2. It has three types of cone cells which are sensitive to light of a different wavelength.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements with reference to the human eye:1. T...
1. Rod and cone cells in the human eye
- Rod and cone cells are photoreceptor cells located in the retina of the human eye.
- Rod cells are responsible for vision in low light conditions and do not detect color.
- Cone cells, on the other hand, are responsible for color vision and function best in bright light.
2. Types of cone cells in the human eye
- The human eye has three types of cone cells, each sensitive to a different range of wavelengths of light.
- These cone cells are called S-cones (short-wavelength sensitive), M-cones (medium-wavelength sensitive), and L-cones (long-wavelength sensitive).
- S-cones are most sensitive to short-wavelength light, which corresponds to the color blue.
- M-cones are most sensitive to medium-wavelength light, which corresponds to the color green.
- L-cones are most sensitive to long-wavelength light, which corresponds to the color red.
Therefore, both statements 1 and 2 are correct. Rod and cone cells receive information in the light that strikes the eye, and the human eye has three types of cone cells that are sensitive to light of different wavelengths, allowing us to perceive a wide range of colors.
- Rod and cone cells are photoreceptor cells located in the retina of the human eye.
- Rod cells are responsible for vision in low light conditions and do not detect color.
- Cone cells, on the other hand, are responsible for color vision and function best in bright light.
2. Types of cone cells in the human eye
- The human eye has three types of cone cells, each sensitive to a different range of wavelengths of light.
- These cone cells are called S-cones (short-wavelength sensitive), M-cones (medium-wavelength sensitive), and L-cones (long-wavelength sensitive).
- S-cones are most sensitive to short-wavelength light, which corresponds to the color blue.
- M-cones are most sensitive to medium-wavelength light, which corresponds to the color green.
- L-cones are most sensitive to long-wavelength light, which corresponds to the color red.
Therefore, both statements 1 and 2 are correct. Rod and cone cells receive information in the light that strikes the eye, and the human eye has three types of cone cells that are sensitive to light of different wavelengths, allowing us to perceive a wide range of colors.
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Consider the following statements with reference to the human eye:1. T...
As the human understanding of colour has improved and its knowledge has also broadened our sense of our place in this world.
- It is a type of information our eyes receive and process based on electromagnetic radiation.
- An object is said to have a colour based on frequencies of visible-light radiation it absorbs, reflects, and/or scatters, we can perceive the object to have a particular colour.
- How human eyes identify colours?
- In the human eye, the rod and the cone cells receive information in the light that strikes the eye: the rod cells record brightness while the cone cells record the wavelengths, which the human brain interprets as colour.
- Human beings have three types of cone cells. Each type is sensitive to light of a different wavelength, and they work together to input colour information to the brain.
- The possession of three types of cone cells is why humans are called trichromats.
- Similarly, while human vision is restricted to wavelengths from 400 nm to 700 nm (visible light), honeybees can also ‘see’ ultraviolet light and mosquitoes and some beetles can access information in some wavelengths of infrared radiation.
How are colours rendered?
- There are two broad ways to render colours:
- Additive colouring: In this, light of different wavelengths is ‘mixed’ to yield light of one combined colour. The colours on your smartphone screens and television sets are produced in this way.
- Subtractive colouring: In subtractive colouring, a colour is rendered by passing white light through a medium that absorbs, or takes away, specific wavelengths of light, leaving the rest to render a particular colour.
- The typical examples include dyes, pigments, and inks.
Hence both statements are correct.
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Consider the following statements with reference to the human eye:1. The rod and cone cells receive information in the light that strikes the eye.2. It has three types of cone cells which are sensitive to light of a different wavelength.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'C'. Can you explain this answer?
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