According to the Young-Helmholtz theory of color vision, humans have cell receptors called "cones" in their retina that have peak sensitivities in the Red, Green and Blue wavelength ranges. When light reflects off a surface, we perceive the color or colors that are reflected; other colors are absorbed by the material. Which TWO of the following statements are correct? Because leaves on a plant reflect green light when illuminated by white light, other colors are absorbed and are therefore necessary for photosynthesis. If a yellow light illuminates a white book, the reflection will cause the red and green cones of an observer to be stimulated and will send a signal to the brain by way of the optic nerve. If both a red light and a green light illuminate a white book, the reflection will cause the blue cones of an observer to be stimulated and will send a signal to the brain by way of the optic nerve. Because leaves on a plant reflect green light when illuminated by white light, the green light itself is necessary for photosynthesis.

According to the Young-Helmholtz theory of color vision, humans have cell receptors called "cones" in their retina that have peak sensitivities in the Red, Green and Blue wavelength ranges. When light reflects off a surface, we perceive the color or colors that are reflected; other colors are absorbed by the material. Which TWO of the following statements are correct? Because leaves on a plant reflect green light when illuminated by white light, other colors are absorbed and are therefore necessary for photosynthesis. If a yellow light illuminates a white book, the reflection will cause the red and green cones of an observer to be stimulated and will send a signal to the brain by way of the optic nerve. If both a red light and a green light illuminate a white book, the reflection will cause the blue cones of an observer to be stimulated and will send a signal to the brain by way of the optic nerve. Because leaves on a plant reflect green light when illuminated by white light, the green light itself is necessary for photosynthesis.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter4: Diffraction

Section: Chapter Questions

Problem 13CQ: Crystal lattices can be examined with X-rays but not UV. Why?

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