The wavelength of the blue light given off by a mercury vapor street lamp is 436 nm.What is the energy of this light in joules? A)4.56 x 10^-²⁸ J B)4.56 x 10^-¹⁹ J C)8.67 x 10^-³² J D)8.67 x 10^-²³ J E)9.63 x 10^-⁴⁰ J

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 x 10^-34 J·s), c is the speed of light (3.00 x 10^8 m/s), and λ is the wavelength in meters (436 nm = 436 x 10^-9 m). Substituting these values gives approximately 4.56 x 10^-19 J.

The Wavelength of the Blue Light Given Off by a Mercury