The energy of a photon that has a wavelength of 9.0 m is ________ J. A)2.2 × 10^-26 B)4.5 × 10²⁵ C)6.0 × 10^-23 D)2.7 × 10⁹ E)4.5 × 10^-25

Question

Quizplus · Accepted Answer

The energy of a photon can be calculated using the equation $E = \frac{hc}{\lambda}$, where $h$ is Planck's constant ($6.626 \times 10^{-34} \, \text{Js}$), $c$ is the speed of light ($3.0 \times 10^8 \, \text{m/s}$), and $\lambda$ is the wavelength of the photon. Substituting the given wavelength of 9.0 m into the equation gives an energy value in the order of $10^{-26}$ Joules, which corresponds to choice A.

The Energy of a Photon That Has a Wavelength of 9.0