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.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

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.

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