Question
Our eyes respond to wavelength ranging from(A) $400 \mathrm{~nm}$ to $700 \mathrm{~nm}$(B) $-\infty$ to $+\infty$(C) $1 \mathrm{~mm}$ to $700 \mathrm{~nm}$(D) $700 \mathrm{~nm}$ to $800 \mathrm{~nm}$
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This region is known as the visible light spectrum. Show more…
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The normal human eye can detect colors whose wavelengths range from 380 nm to about 600 nm.
The human eye is sensitive to wavelengths from about $400 \mathrm{nm}$ to $700 \mathrm{nm} .$ What's the corresponding range of photon energies?
The wavelength of maximum light emission from the body is closest to: $$\begin{array}{llll}{\text { (a) } 500 \mathrm{nm}} & {\text { (b) } 700 \mathrm{nm}} & {\text { (c) } 1200 \mathrm{nm}}\end{array}$$ $$(d) 4500 \mathrm{nm} \quad (e) 9500 \mathrm{nm}$$
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