Electromagnetic radiation with a wavelength of 425 nm appears as violet light to the human eye. The energy of one photon of this light is ________ J. A)8.45 × 10^-32 B)4.68 × 10^-28 C)4.68 × 10^-19 D)8.45 × 10^-23 E)2.14 × 10¹⁸

Question

Quizplus · Accepted Answer

The energy of a photon is calculated using the formula E = hc/λ, where h is Planck's constant (6.626 × 10^-34 J·s), c is the speed of light (3.00 × 10^8 m/s), and λ is the wavelength in meters (425 nm = 425 × 10^-9 m). Plugging in these values gives E ≈ 4.68 × 10^-19 J.

Electromagnetic Radiation with a Wavelength of 425 Nm Appears as Violet