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

question 117

Multiple Choice

Which of the following photons has the lowest 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