Which of the following photons has the highest energy? A) a photon from a Nd:YAG laser with $\lambda$= 1,064 nm B) a photon from an Ar⁺ laser with $\lambda$ = 514.5 nm C) a photon from a Kr⁺ laser with $\lambda$ = 647 nm D) a photon from an ArF laser with $\lambda$ = 193 nm E) a photon from a He-Ne laser with $\lambda$ = 633 nm

Question

Quizplus · Accepted Answer

The energy of a photon is given by E=hc/λ, where h is Planck's constant, c is the speed of light and λ is the wavelength of the photon. As λ decreases, E increases. The photon from an ArF laser with λ=193 nm has the shortest wavelength and therefore the highest energy.

Which of the Following Photons Has the Highest Energy? A) λ\lambdaλ

Which of the Following Photons Has the Highest Energy?
A) $\lambda$