What is the energy of a photon of blue light that has a wavelength of 453 nm? A)4.53 $\times$10^-⁷ J B)4.39 $\times$10^-¹⁹ J C)6.62 $\times$ 10¹⁴ J D)9.00 $\times$ 10^-³² J E)2.28 $\times$ 10¹⁸ J

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Quizplus · Accepted Answer

The energy of a photon can be calculated using the equation $E = \frac{hc}{\lambda}$, where $h$ is Planck's constant ($6.626 \times 10^{-34} \, \text{J s}$), $c$ is the speed of light ($3.00 \times 10^8 \, \text{m/s}$), and $\lambda$ is the wavelength in meters. Converting 453 nm to meters (453 nm = $453 \times 10^{-9}$ m) and plugging the values into the equation gives an energy value close to the one in choice B.

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